Fuel Processing Technology最新文献_第6页

Flexible off-grid renewable power-to-methanol system: Techno-economic optimization 柔性离网可再生能源制甲醇系统：技术经济优化

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2025-11-04 DOI: 10.1016/j.fuproc.2025.108351

Yanli Wu , Zhiwei Zhang , Di Zhang , Lixing Zheng , Jianchao Ma

Renewable methanol production a promising pathway for industrial decarbonization, yet off-grid Power-to-Methanol (PTM) deployment is limited by the intermittency of wind and solar resources. With the aim to optimally configure an off-grid PTM system balancing efficiency, cost, and renewable utilization, we propose a flexible off-grid PTM process that integrates H₂O/CO₂ co-electrolysis and CO₂ energy storage, with a focus on the process intensification and flexibility operation. We employ a two-stage optimal dispatch model to determine optimal system capacities and conduct techno-economic assessment. Results show that the optimized system achieves 95.5 % renewable penetration, 62.0 % energy efficiency, a minimum levelized cost of methanol of $902.3/t, and a negative carbon intensity of −0.90 t CO₂ t⁻¹ MeOH. Flexible operation extends annual operating hours of the solid oxide electrolysis cell and methanol synthesis unit to 8730 h and 8345 h, respectively. Sensitivity analysis identifies the solid oxide electrolysis cells as critical cost drivers. This work provides a technical solution for the efficient use of renewable energy in remote regions and presents a conceptual techno-economic design study based on modeling and simulation. These findings demonstrate that process flexibility and energy storage enable economically competitive, carbon-negative methanol production, advancing the role of PTM in industrial decarbonization.

可再生甲醇生产是工业脱碳的一个有前途的途径，但离网发电制甲醇（PTM）的部署受到风能和太阳能资源间歇性的限制。为了优化配置离网PTM系统，平衡效率、成本和可再生能源利用，我们提出了一种结合H₂O/CO₂共电解和CO₂储能的柔性离网PTM工艺，重点关注工艺集约化和灵活性操作。我们采用两阶段最优调度模型来确定最优系统容量并进行技术经济评估。结果表明，优化后的体系可再生能源渗透率为95.5%，能源效率为62.0%，甲醇的最低平准化成本为902.3美元/t，负碳强度为- 0.90 t CO₂t - 1 MeOH。灵活操作将固体氧化物电解池和甲醇合成装置的年运行时间分别延长至8730小时和8345小时。敏感性分析表明固体氧化物电解电池是关键的成本驱动因素。本研究为偏远地区可再生能源的有效利用提供了技术解决方案，并提出了基于建模和仿真的概念性技术经济设计研究。这些发现表明，工艺灵活性和能量存储能够实现具有经济竞争力的碳负甲醇生产，推进PTM在工业脱碳中的作用。

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引用次数: 0

Biodiesel production from sewage sludge catalyzed by polyoxometalate Cs10[H1.8Ge3.2Nb11O39]: Experiments, mechanism and machine learning modeling with radial basis function interpolation based data augmentation 多金属氧酸盐Cs10[H1.8Ge3.2Nb11O39]催化污泥生产生物柴油：基于径向基函数插值的数据增强实验、机理及机器学习建模

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2025-10-30 DOI: 10.1016/j.fuproc.2025.108356

Luxin Zhang , Lu Wang , Weiwei Shi , Yi Feng , Rong Chen

Abundant lipids-containing sewage sludge are potential inexpensive alternative substrate for biodiesel production. Herein, a novel polyoxometalate, Cs₁₀[H_1.8Ge_3.2Nb₁₁O₃₉], with desirable acid-base bifunctionality, was synthesized. It demonstrated high efficiency in facilitating biodiesel production from sewage sludge, through in-situ esterification/transesterification, resulted in maximum biodiesel yields of 94.4 %. The catalyst exhibited good resistance to free fatty acids and demonstrated high water tolerance, retaining over 60 % yield even at 99 wt% moisture. To predict and optimize biodiesel yield from sewage sludge, this study presents a novel machine learning framework that integrates Radial Basis Function (RBF) interpolation-based data augmentation with Artificial Neural Network (ANN) modeling, achieving a high coefficient of determination (R² = 0.96) and reduced prediction errors. The incorporation of RBF-enhanced data augmentation effectively mitigates model overfitting while improving cost-effectiveness. The influence of each parameter and relative importance of key reaction parameters on biodiesel production was elucidated by SHapley Additive exPlanations and partial dependence analysis. The physicochemical characteristics of the produced biodiesel met the specifications of international standards, indicating its potential to replace diesel fuel. This study not only offers a new approach to advancing sustainable biodiesel production processes with cheap substrates but also provides practical guidance for sewage sludge treatment and upcycling.

丰富的含脂污水污泥是生产生物柴油的潜在廉价替代基质。本文合成了一种具有理想酸碱双官能团的新型多金属氧酸盐Cs10[H1.8Ge3.2Nb11O39]。通过原位酯化/酯交换反应，它在促进污水污泥生产生物柴油方面表现出高效率，生物柴油的产率最高可达94.4%。该催化剂具有良好的抗游离脂肪酸性能和耐水性，即使在99%的水分条件下也能保持60%以上的产率。为了预测和优化污水污泥的生物柴油产量，本研究提出了一种新的机器学习框架，该框架将基于径向基函数（RBF）插值的数据增强与人工神经网络（ANN）建模相结合，实现了高决定系数（R2 = 0.96）并减少了预测误差。结合rbf增强的数据增强有效地缓解了模型过拟合，同时提高了成本效益。通过SHapley加性解释和部分依赖分析，阐明了各参数对生物柴油生产的影响以及关键反应参数的相对重要性。所得生物柴油的理化特性符合国际标准，具有替代柴油的潜力。该研究不仅为推进廉价底物可持续生物柴油生产工艺提供了新途径，而且为污水污泥处理和升级利用提供了实用指导。

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引用次数: 0

Decarbonised H2 recovery and CO2 capture using a cost-effective membrane plant: A step towards energy transition 使用经济高效的膜装置脱碳H2回收和CO2捕获：迈向能源转型的一步

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2025-10-29 DOI: 10.1016/j.fuproc.2025.108353

Pasquale Francesco Zito , Jan Veres , Adolfo Iulianelli

Separation of H₂ from CO₂ is crucial in industry, since they are the products of water gas shift reaction. In addition, the demand for pure H₂, as well as the potential reuse of CO₂ as reactant, are increasing as a consequence of the transition from fossil fuels to decarbonization processes.

In this scenario, this work aims to propose a possible solution to get simultaneously pure H₂ and CO₂, meeting the world's requirements in terms of reduction of CO₂ emissions and transition to cleaner energy. A simulated plant combining Pd-based and SAPO-34 membrane modules is able to provide pure H₂, with a final recovery higher than 97%. In addition, the entire CO₂ fed to SAPO-34 unit is recovered in the permeate stream, with a concentration of 97.7%.

A cost analysis shows that feed gas gives a higher contribution than compression, heat exchange and membranes (e.g., 70, 20, 3 and 7% respectively). Net profit and net present value are positive within a specific feed gas price range (e.g., net profit up to 0.10 and 0.155 $/Nm³, depending on the labour cost set), showing that the process can be cost-effective and profitable. H₂ purification cost ranges between 2.6 and 7.8 $/kg.

氢气和二氧化碳的分离在工业上是至关重要的，因为它们是水气转换反应的产物。此外，由于从化石燃料向脱碳过程的过渡，对纯氢气的需求以及二氧化碳作为反应物的潜在再利用正在增加。在这种情况下，本工作旨在提出一种可能的解决方案，同时获得纯H2和CO2，满足世界在减少CO2排放和向清洁能源过渡方面的要求。结合Pd-based和SAPO-34膜组件的模拟装置能够提供纯H2，最终回收率高于97%。此外，注入SAPO-34装置的CO2全部在渗透流中回收，浓度为97.7%。成本分析表明，原料气的贡献高于压缩、热交换和膜（例如，分别为70%、20%、3%和7%）。在特定的原料气价格范围内，净利润和净现值为正（例如，净利润高达0.10和0.155美元/立方英尺，具体取决于劳动力成本设置），表明该工艺具有成本效益和盈利能力。氢气净化成本在2.6 - 7.8美元/公斤之间。

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引用次数: 0

An experimental study on pore complexity in single-particle coal and its impact on CH₄ diffusion kinetics 单颗粒煤孔隙复杂性及其对氯化氢扩散动力学影响的实验研究

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2025-10-28 DOI: 10.1016/j.fuproc.2025.108355

Biao Hu, Zhengjie Qiao, Kai Han, Shugang Li, Haifei Lin, Liang Cheng, Zeyu Ren, Rongwei Luo

CH₄ diffusion kinetics in coal are critical for coal mine gas disaster control. Conventional qualitative analyses of coal gas diffusion, based on unit-mass pore parameters, neglect its fundamental origin within individual particles. In this study, a medium-volatile bituminous coal sample was gradually crushed by a jaw crusher and screened with a sample sieve into six particle size ranges: 0.3–0.5, 0.2–0.3, 0.125–0.2, 0.074–0.125, 0.045–0.075, and < 0.045 mm. The coal particle was modeled as homogeneous spheres and quantitatively characterized the full-scale pore structure (micropores: <2 nm, mesopores: 2–50 nm, macropores: 50–300 nm) using low-pressure N₂ (77 K) and CO₂ (273 K) adsorption. By integrating particle density and median size (D50), unit-mass pore parameters were converted into single-particle parameters. Results show that as the particle size decreased from 0.3 to 0.5 mm to <0.045 mm, the total pore volume within a single particle decreased exponentially by nearly four orders of magnitude. In addition, the initial CH₄ desorption rate (V₀_–₁) increased rapidly (5.5 times) as the particle size decreased, while the initial CH₄ diffusion coefficient (D₀) decreased linearly from 1.47 × 10⁻¹³ m²/s to 4.29 × 10⁻¹⁵ m²/s (34.3 times). The attenuation coefficient (β) increased exponentially from 8.97 × 10⁻⁵ to 1.401 × 10⁻³ s⁻¹ (15.6 times). Analysis from the single-particle perspective reveals that smaller coal particles have simpler pores, accelerating initial CH₄ desorption but hastening decay. This contradicts unit-mass perspective suggesting finer coal has richer porosity, indicating that mass-averaging in traditional methods obscures the true impact of particle size on diffusion kinetics.

氯化钾在煤中的扩散动力学是煤矿瓦斯灾害控制的关键。传统的基于单位质量孔隙参数的煤层气扩散定性分析忽略了其在单个颗粒内的基本起源。本研究采用颚式破碎机对中挥发分烟煤样品进行逐步破碎，并用样品筛筛分出0.3-0.5、0.2-0.3、0.125-0.2、0.074-0.125、0.045 - 0.075、0.045 mm 6个粒径范围。采用低压N₂（77 K）和CO₂（273 K）吸附，将煤颗粒模拟为均匀球，定量表征了煤颗粒的全尺寸孔隙结构（微孔：2 nm，中孔：2 ~ 50 nm，大孔：50 ~ 300 nm）。通过对颗粒密度和中值尺寸（D50）进行积分，将单位质量孔隙参数转化为单颗粒参数。结果表明，随着粒径从0.3 ~ 0.5 mm减小到0.045 mm，单个颗粒内的总孔隙体积呈指数级减小了近4个数量级。随着粒径的减小，初始CH4解吸速率（V0-1）迅速增加（5.5倍），初始CH4扩散系数（D0）从1.47 × 10−13 m2/s线性降低到4.29 × 10−15 m2/s（34.3倍）。衰减系数（β）从8.97 × 10−5呈指数增长到1.401 × 10−3 s−1（15.6倍）。单颗粒分析表明，煤颗粒越小，孔隙越简单，加速了初始氯化氢解吸，但加速了衰变。这与单位质量观点相矛盾，认为更细的煤具有更丰富的孔隙度，表明传统方法中的质量平均掩盖了粒径对扩散动力学的真正影响。

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引用次数: 0

Lignocellulosic biomass pyrolysis: A review on the pretreatment and catalysts 木质纤维素生物质热解预处理及催化剂研究进展

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2025-10-24 DOI: 10.1016/j.fuproc.2025.108352

Xingke Zhang , Yan Zhang , Shuo Zhang , Lihong Yao , Yinan Hao

Facing the dual challenges of fossil energy depletion and environmental pollution, the development of clean energy, particularly carbon-neutral biomass, has gained significant attention. Biomass thermochemical conversion offers an efficient pathway to produce high-value chemicals. This review systematically examines five key aspects: biomass pretreatment, catalytic pyrolysis, catalyst deactivation, machine learning applications, and industrial production. Pretreatment methods improve biomass quality and facilitate subsequent processing. Catalytic pyrolysis, employing catalysts such as alkaline earth metals, acidic sites, zeolites, and rare-earth metals, shows great potential for producing renewable fuels and chemicals. The review compares the performance of various catalysts and discusses their impact on bio-oil yield and quality. Additionally, it summarizes major causes of catalyst deactivation and emerging machine learning approaches for optimizing pyrolysis processes. Current industrial-scale biomass refining installations are also reviewed. Finally, a SWOT analysis is provided to evaluate the challenges and opportunities of biomass pyrolysis, along with future research priorities for industrial scaling.

面对化石能源枯竭和环境污染的双重挑战，清洁能源尤其是碳中性生物质的发展日益受到重视。生物质热化学转化为生产高价值化学品提供了一条有效途径。这篇综述系统地研究了五个关键方面：生物质预处理、催化热解、催化剂失活、机器学习应用和工业生产。预处理方法提高了生物质质量，便于后续处理。采用碱土金属、酸性位点、沸石和稀土金属等催化剂的催化热解在生产可再生燃料和化学品方面显示出巨大的潜力。比较了各种催化剂的性能，讨论了其对生物油收率和质量的影响。此外，它总结了催化剂失活的主要原因和新兴的优化热解过程的机器学习方法。还审查了目前工业规模的生物质精炼装置。最后，通过SWOT分析来评估生物质热解的挑战和机遇，以及未来工业规模的研究重点。

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引用次数: 0

Multi-strategy modeling integrating kinetics mechanism of cracking and pyrolysis and unsupervised dual-stage attention long and short-term memory network 基于裂化热解动力学机制和无监督双阶段注意长短期记忆网络的多策略建模

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2025-10-21 DOI: 10.1016/j.fuproc.2025.108349

Bin Wang , Kai Luo , Xiangming Chen , Kai Deng , Jian Long , Wenze Guo

The fluid catalytic cracking process utilizing the dual-riser reactors (MIP-LTAG) holds significant importance in the development of petrochemical enterprises. It aims to reduce fuel consumption while increasing output. Consequently, modeling for the production process is an essential task. However, traditional methods struggle to accurately describe the complex reaction mechanisms involved in the cracking/pyrolysis dual reaction pathways. Additionally, due to the coupling of variables and insufficiency of dynamic characteristics, capturing multi-variable spatio-temporal dependencies remains challenging. This paper focuses on key indicators such as product yield and carbon emissions within the core reaction-regeneration unit of the target technological process. A lumped kinetic mechanism model is constructed to balance the reaction pathway. Variational mode decomposition (VMD) is employed to perform decomposition of the coupled variables. The unsupervised dual-stage attentional long short term memory model (UDA-LSTM) is utilized to capture multi-scale characteristics. To leverage these advantages, this paper designs three hybrid model for collaborative optimization of multi-objective predictions. Finally, the effectiveness of the proposed hybrid modeling framework is validated through an actual industrial production case. The predicted mean squared error (MSE) of the main product yield does not exceed 0.2, and the constructed process model supports real-time monitoring of the production process by refineries.

双提升管反应器催化裂化工艺对石化企业的发展具有重要意义。它的目的是在增加产量的同时减少燃料消耗。因此，为生产过程建模是一项必不可少的任务。然而，传统方法难以准确描述裂化/热解双反应路径中复杂的反应机理。此外，由于变量的耦合和动态特征的不足，捕获多变量时空依赖关系仍然具有挑战性。本文重点研究了目标工艺流程核心反应-再生单元内的产品产率和碳排放等关键指标。为了平衡反应途径，建立了集总动力学机理模型。采用变分模态分解（VMD）对耦合变量进行分解。采用无监督双阶段注意长短期记忆模型（UDA-LSTM）捕捉多尺度特征。为了充分利用这些优势，本文设计了三种多目标预测协同优化的混合模型。最后，通过一个实际的工业生产案例验证了所提出的混合建模框架的有效性。主要产品产率的预测均方误差（MSE）不超过0.2，所构建的工艺模型支持炼油厂对生产过程的实时监控。

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引用次数: 0

Catalytic methanol reforming process intensification for integration with proton-exchange membrane fuel cells (PEMFC) - Review 与质子交换膜燃料电池（PEMFC）集成的催化甲醇重整过程强化——综述

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2025-10-17 DOI: 10.1016/j.fuproc.2025.108350

Emilija Todorovski , Filip Todorovski , Andrej Lotrič , Mitja Mori , Blaž Likozar , Søren Juhl Andreasen , Mihael Sekavčnik

The Net Zero Scenario, driven by the imperative of carbon neutrality, demands a major reduction in reliance on fossil fuel-based hydrogen production. Another challenge is hydrogen's storage and transport due to its low volumetric energy density. These issues have elevated hydrogen carriers—particularly methanol—to a prominent position. Methanol's favorable H/C ratio, liquid state under ambient conditions, and renewable production potential establish it as a compelling hydrogen carrier. Already essential in vehicle fuels and chemical production, methanol's role is poised to expand further. Among conversion routes, methanol steam reforming (MSR) stands out for its high hydrogen yield and low CO production. This review outlines strategies for lowering the MSR reaction temperature, enabling integration with proton exchange membrane fuel cells (PEMFC), and leveraging the thermal synergy between the two systems. The review highlights the critical roles of catalysts and reactor design in optimizing MSR–PEMFC integration. A detailed evaluation of Cu-based and group 8–10 metal catalysts provides insight into their suitability for PEMFC applications. Reactor configurations, including conventional, membrane, and micro-channeled designs, are assessed for their integration potential. Finally, the review synthesizes these findings into design-oriented insights for optimizing MSR–PEMFC systems, emphasizing catalyst selection, reactor configuration, and system-level integration, offering practical pathways for implementation.

在碳中和势在必行的推动下，净零情景要求大幅减少对化石燃料制氢的依赖。另一个挑战是氢的储存和运输，因为它的低体积能量密度。这些问题将氢载体——尤其是甲醇——提升到了一个突出的位置。甲醇良好的H/C比、环境条件下的液态和可再生生产潜力使其成为令人信服的氢载体。甲醇在汽车燃料和化工生产中已经是必不可少的，它的作用还将进一步扩大。在各种转化途径中，甲醇蒸汽重整（MSR）以其产氢率高、CO产量低而著称。本文概述了降低MSR反应温度、与质子交换膜燃料电池（PEMFC）集成以及利用两个系统之间的热协同作用的策略。综述强调了催化剂和反应器设计在优化MSR-PEMFC集成中的关键作用。对cu基和基团8-10金属催化剂的详细评估有助于深入了解它们在PEMFC应用中的适用性。反应器配置，包括常规、膜和微通道设计，评估其集成潜力。最后，该综述将这些发现综合为优化MSR-PEMFC系统的设计导向见解，强调催化剂选择，反应器配置和系统级集成，为实施提供实用途径。

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引用次数: 0

Valorization of food waste into renewable fuels via anaerobic digestion and inline CO2 reforming over Ni-based catalysts 通过厌氧消化和镍基催化剂上的在线二氧化碳重整，将食物垃圾转化为可再生燃料

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2025-10-10 DOI: 10.1016/j.fuproc.2025.108348

Amer Inayat , Petra Wojnarova , Piotr Jachimowicz , Jacopo De Maron , Elisabetta Orfei , Nicola Schiaroli , Carlo Lucarelli , Kamil Gorecki , Francesco Basile , Pavel Lestinsky , Jiri Rusin

Anaerobic digestion (AD) is a promising technology for converting food waste (FW) or other biodegradable organic waste (BOW) into renewable biogas, while dry reforming of methane (DRM) is an environmentally friendly route for converting greenhouse gases into syngas. Moreover, the use of renewable biogas in dry reforming aligns with the global sustainability goals for reducing reliance on fossil fuels in producing important chemicals. In this regard, the present study deals with the valorization of food waste into renewable hydrogen/syngas by integrating AD and DRM. AD of FW was carried out in a lab-scale anaerobic reactor and the resulting biogas was passed over a sorption bed for H₂S removal. It was shown that iron hydroxide-based materials can effectively remove H₂S, thereby providing a clean biogas feed suitable for catalytic dry reforming. Furthermore, it was demonstrated that the Ni catalyst, doped with a small amount of noble metal and supported on MgAl mixed oxides, exhibits superior catalytic performance in reforming of real or model biogas mixtures. The catalyst showed outstanding stability despite online changes in the reaction parameters. This study may provide new insights toward the development of sustainable processes that simultaneously reduce BOW and CO₂, while also generating valuable products.

厌氧消化（AD）是将食物垃圾（FW）或其他可生物降解的有机废物（BOW）转化为可再生沼气的一种很有前途的技术，而甲烷干重整（DRM）是将温室气体转化为合成气的一种环保途径。此外，在干式重整中使用可再生沼气符合全球可持续发展目标，即在生产重要化学品时减少对化石燃料的依赖。在这方面，本研究通过整合AD和DRM来处理食物垃圾转化为可再生氢/合成气的问题。在实验室规模的厌氧反应器中对FW进行AD处理，所得沼气通过吸附床去除H2S。结果表明，氢氧化铁基材料可以有效地去除H2S，从而提供适合于催化干式重整的清洁沼气原料。此外，还证明了在MgAl混合氧化物上掺杂少量贵金属的Ni催化剂在实际或模型沼气混合物的重整中表现出优异的催化性能。尽管反应参数在线变化，催化剂仍表现出优异的稳定性。这项研究可能为开发可持续的工艺提供新的见解，同时减少BOW和CO2，同时也产生有价值的产品。

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引用次数: 0

Stepwise Fe introduction tailors Rh-CeO2 active sites for selective CO2 hydrogenation to ethanol Fe的逐步引入调整了Rh-CeO2的活性位点，以选择性地将CO2加氢成乙醇

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2025-10-06 DOI: 10.1016/j.fuproc.2025.108347

Jun Yu , Rui Xu , Yong Guo , Dongsen Mao , Tao Meng , Xiang Zheng , Haifang Mao

CO₂ hydrogenation to produce high-value fuels like ethanol represents a cutting-edge research frontier, yet overcoming the low ethanol productivity remains a challenge. Herein, a series of Fe-promoted Rh/CeO₂ catalysts were prepared by varying the impregnation sequences, and investigated their catalytic performance of ethanol synthesis via CO₂ hydrogenation. The Fe/Rh/CeO₂ catalyst, fabricated through sequential Rh impregnation followed by Fe deposition, demonstrated remarkable performance, achieving 19.8 % ethanol selectivity at 10.8 % CO₂ conversion, with a notable one-pass ethanol productivity of 25.3 mmol·g_Rh⁻¹·h⁻¹. Characterization results revealed that sequential Rh impregnation prior to Fe can promote the Rh dispersion and metal-support interaction, enhancing CO₂ adsorption and dissociation capability. This interface also facilitates the transformation of absorbed b-CO₃²⁻ into CO(l), provides high concentrations of CO(l) and HCOO* intermediates simultaneously, and finally boosting the ethanol formation by the C − C coupling reaction.

二氧化碳加氢生产像乙醇这样的高价值燃料代表了一个前沿的研究前沿，但克服低乙醇生产率仍然是一个挑战。本文通过不同浸渍顺序制备了一系列fe促进的Rh/CeO2催化剂，并研究了它们对CO2加氢合成乙醇的催化性能。通过连续Rh浸渍和Fe沉积制备的Fe/Rh/CeO 2催化剂表现出优异的性能，在10.8%的CO₂转化率下，乙醇选择性达到19.8%，一次乙醇产率达到25.3 mmol·gRh−1·h−1。表征结果表明，在Fe之前顺序浸渍Rh可以促进Rh的分散和金属-载体的相互作用，增强CO₂的吸附和解离能力。该界面还促进吸收的b-CO32−转化为CO(l)，同时提供高浓度的CO(l)和HCOO*中间体，最终通过C -C偶联反应促进乙醇的生成。

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引用次数: 0

A cation-exchange membrane direct formate-CO2 fuel cell: Enabling simultaneous hydrogen production and CO2 utilization 一种阳离子交换膜直接甲酸-二氧化碳燃料电池：能够同时生产氢气和利用二氧化碳

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2025-09-30 DOI: 10.1016/j.fuproc.2025.108346

Jinxu Hao , Xianda Sun , Baibin Ma , Wanzhen Huang , Yuandong Yang , Xiaohan Ren

The carbon-neutral and carbon-negative energy utilization technologies have long been people pursued to realize the strategic objective of carbon neutrality. Herein, we propose a cation-exchange membrane (CEM) direct formate-CO₂ fuel cell that possesses the capability of simultaneously generating electricity and producing hydrogen, as well as continuously transforming carbon dioxide into pure sodium bicarbonate. Using the CO₂-derived formate fuel, the roof-of-concept CEM direct formate-CO₂ fuel cell exhibits a peak power density of 38 mW cm⁻² at 80 °C without the assistance of additional electrolyte. The fairly stable constant-current discharge curve along with the detected hydrogen and pure sodium bicarbonate prove the conceptual feasibility of this electricity‑hydrogen-bicarbonate co-production device. By adding alkaline electrolyte to the anode, we achieved a higher peak power density of 63 mW cm⁻² at the corresponding hydrogen production rate of 0.57 mL min⁻¹ cm⁻². More interestingly, the concentrations of pure NaHCO₃ solution can be controlled by adjusting the cathode water flow rate and fuel cell discharge current density. This work presents a theoretically feasible avenue for coupling hydrogen production and CO₂ utilization.

为实现碳中和的战略目标，碳中和和负碳能源利用技术一直是人们追求的目标。在此，我们提出了一种阳离子交换膜（CEM）直接甲酸-二氧化碳燃料电池，它具有同时发电和产氢的能力，并能不断地将二氧化碳转化为纯碳酸氢钠。使用二氧化碳衍生的甲酸燃料，CEM直接甲酸-二氧化碳燃料电池在80°C下，无需额外电解质的帮助，其峰值功率密度为38 mW cm - 2。相当稳定的恒流放电曲线以及检测到的氢气和纯碳酸氢钠证明了该电-碳酸氢钠联产装置在概念上的可行性。通过在阳极中加入碱性电解质，我们获得了更高的峰值功率密度为63 mW cm−2，相应的产氢速率为0.57 mL min−1 cm−2。更有趣的是，可以通过调节阴极水流量和燃料电池放电电流密度来控制纯NaHCO3溶液的浓度。这项工作提出了一个理论上可行的途径耦合氢气生产和二氧化碳利用。

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