Chinese Journal of Catalysis最新文献_第2页

Machine-learning-aided discovery of methanol-to-olefins zeolite catalysts with ultra-high initial selectivity 机器学习辅助发现具有超高初始选择性的甲醇制烯烃沸石催化剂

IF 17.7 1区化学 Q1 CHEMISTRY, APPLIED

Chinese Journal of Catalysis

Pub Date : 2026-02-01 DOI: 10.1016/S1872-2067(25)64903-5

Xinyi Wang , Chaoqi Wang , Miao Yang , Xiaoguang Wang , Yuezhong Zuo , Zhuangzhuang Zhang , Yimo Wu , Jingfeng Han , Bing Li , Wei Huang , Limin Ren , Yingxu Wei , Xinmei Liu , Peng Tian , Zhongmin Liu

With the continuous advancement of the industrialized methanol-to-olefins (MTO) process and a profound understanding of its mechanism, designing MTO catalysts to enhance light olefin yields and flexibly regulate product distribution has emerged as a significant challenge. Data-driven modeling allows chemists to anticipate reaction trends and outcomes. However, for models to be instructive for specific chemical issues, chemists must collect experimental data, encode the relevant variables and retrain specialized models. In this work, we demonstrate how to use a machine learning (ML) workflow to discover a potential MTO zeolite catalyst. An MTO database was built, on which over 20 types of ML models were trained, followed by their evaluation and experimental validation. The decision rules for high selectivity were extracted, facilitating the targeting of potential MTO catalysts and the understanding of MTO reaction mechanism. A rapid prediction of optimal MTO evaluation conditions and results for a given zeolite catalyst was also realized, greatly saving the cost of trial and error. In particular, a special MTO catalyst with high initial ethene selectivity over 60% was found, demonstrating the effectiveness and capability of ML techniques.

随着工业化甲醇制烯烃（MTO）工艺的不断推进和对其机理的深入了解，设计出提高轻质烯烃收率和灵活调节产品分布的MTO催化剂已成为一个重大挑战。数据驱动的建模使化学家能够预测反应趋势和结果。然而，要使模型对具体的化学问题具有指导意义，化学家必须收集实验数据，对相关变量进行编码，并重新训练专门的模型。在这项工作中，我们演示了如何使用机器学习（ML）工作流程来发现潜在的MTO沸石催化剂。建立了MTO数据库，在此基础上训练了20多种机器学习模型，并对其进行了评价和实验验证。提取了高选择性的决策规则，为MTO催化剂的定位和MTO反应机理的理解提供了依据。实现了对给定沸石催化剂的最佳MTO评价条件和结果的快速预测，大大节省了试错成本。特别地，发现了一种特殊的MTO催化剂，其初始乙烯选择性超过60%，证明了ML技术的有效性和能力。

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引用次数: 0

Quantitative insights into the critical role of potential-dependent (electro)chemical steps in ammonia electrosynthesis via constant-potential microkinetic simulations 通过恒电位微动力学模拟定量了解氨电合成中电位依赖（电）化学步骤的关键作用

IF 17.7 1区化学 Q1 CHEMISTRY, APPLIED

Chinese Journal of Catalysis

Pub Date : 2026-02-01 DOI: 10.1016/S1872-2067(25)64842-X

Xingshuai Lv , Pei Zhao , Yan Liang , Thomas Frauenheim , Liangzhi Kou

Electric fields play a pivotal role in renewable energy technologies and are essential for enabling a sustainable future. However, the regulation of macroscale catalytic behavior by electric fields has not been well digitally understood yet, as conventional computational models rely on reaction energy profiles that overlook the nonlinear effects of electric fields on elementary reaction steps. Here, we use advanced constant-potential microkinetic simulations to revisit the electrochemical nitrogen reduction reaction (eNRR) under operating conditions, which makes it possible to explicitly integrate both electrochemical and chemical steps and quantitatively predict the effects of electric fields on eNRR macroscale performance. The theoretical activity trends for different metals were successfully reproduced with our model, which are in good qualitative agreement with experimental observations. Furthermore, we propose a new theoretical protocol for eNRR catalyst screening, where an optimal catalyst should exhibit overwhelming N₂ adsorption ability over a wide potential range to sufficiently facilitate eNRR at high potentials. Interestingly, the rate-determining step undergoes dynamic evolution with potential variations, with chemical steps imposing fundamental constraints on practical ammonia (NH₃) electrosynthesis. Microkinetic simulations demonstrate that incorporating *NH₃ desorption steps can alter reaction rates by orders of magnitude, highlighting their critical yet often overlooked role. This work establishes a quantitative framework for achieving accurate, physically realistic theoretical simulations in heterogeneous electrochemistry.

电场在可再生能源技术中发挥着关键作用，对于实现可持续的未来至关重要。然而，电场对宏观催化行为的调控还没有得到很好的数字理解，因为传统的计算模型依赖于反应能量分布，忽略了电场对基本反应步骤的非线性影响。本研究采用先进的恒电位微动力学模拟方法，重新考察了电化学氮还原反应（eNRR）在操作条件下的反应过程，从而可以明确地整合电化学和化学步骤，并定量预测电场对eNRR宏观性能的影响。该模型成功地再现了不同金属的理论活度趋势，与实验结果在定性上一致。此外，我们提出了一种新的eNRR催化剂筛选理论方案，其中最佳催化剂应在宽电位范围内表现出压倒性的N2吸附能力，以充分促进高电位的eNRR。有趣的是，速率决定步骤随着电位的变化而动态演变，化学步骤对实际的氨（NH₃）电合成施加了基本的限制。微动力学模拟表明，结合*NH₃解吸步骤可以在数量级上改变反应速率，突出了它们的关键但经常被忽视的作用。这项工作建立了一个定量框架，实现准确的，物理现实的理论模拟在异质电化学。

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引用次数: 0

Fe and Co bimetallic single-atoms coordinated by N and Te as bifunctional oxygen reduction/evolution catalysts for high-performance zinc-air battery N和Te配位的Fe和Co双金属单原子作为高性能锌空气电池的双功能氧还原/析出催化剂

IF 17.7 1区化学 Q1 CHEMISTRY, APPLIED

Chinese Journal of Catalysis

Pub Date : 2026-02-01 DOI: 10.1016/S1872-2067(25)64875-3

Hui-Min Xu , Xiao-Qi Gong , Kai-Hang Yue , Chen-Jin Huang , Hong-Rui Zhu , Lian-Jie Song , Gao-Ren Li

Zinc air batteries (ZABs) are a low-cost, high-energy density, and green sustainable energy storage device. At present, the main challenge in achieving large-scale application of ZABs is to develop low-cost and high-performance bifunctional catalysts for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR). Compared with monometallic single-atom catalyst, the bimetallic single-atoms catalyst can effectively improve ORR/OER bifunctional activity, realize rapid charge transfer, and play a significant role in regulating the adsorption of oxygen intermediates. In this study, we design the novel Fe and Co bimetallic single-atoms coordinated by Te and N anchoring on N-doped carbon (NC) (denoted as FeN_xTe_y/CoN_xTe_y@NC) for the first time, serving as a bifunctional catalyst for ZABs. This innovative catalyst exhibits excellent bifunctional ORR/OER catalytic performance under alkaline conditions, achieving a high half-wave potential of 0.912 V for ORR and a low overpotential of 305 mV for OER at 10 mA cm^–2. The FeN_xTe_y/CoN_xTe_y@NC-based ZABs realizes a high peak power density of 306.1 mW cm^–2 and a large specific energy density of 773.2 mAh g^–1. The experimental data show that the N-doped can achieve precise regulation of the structure and high-density distribution of atomic active sites in FeN_xTe_y/CoN_xTe_y@NC (idealized theoretical model is FeCoN₆Te). The density functional theory calculations show that when the FeN₄/CoN₄ models (the synthesized catalyst denoted as FeN_x/CoN_x@NC) transforms into FeCoN₆Te models, Te atoms regulate the local charge densities of Fe and Co on FeCoN₆Te models and further promote the charge transfer between Fe and Co on FeCoN₆Te models, which optimizes the adsorption energies of ORR/OER intermediates. The findings in this study will pave the way for the development of high-performance bimetallic single-atom catalysts for practical energy conversion applications.

锌空气电池（ZABs）是一种低成本、高能量密度、绿色可持续的储能装置。目前，实现ZABs大规模应用的主要挑战是开发低成本、高性能的析氧反应（OER）和氧还原反应（ORR）双功能催化剂。与单金属单原子催化剂相比，双金属单原子催化剂能有效提高ORR/OER双功能活性，实现快速电荷转移，在调节氧中间体吸附方面发挥显著作用。在本研究中，我们首次设计了由Te和N配位锚定在N掺杂碳（NC）上的新型Fe和Co双金属单原子（表示为FeNxTey/CoNxTey@NC），作为ZABs的双功能催化剂。该创新催化剂在碱性条件下表现出优异的双功能ORR/OER催化性能，在10 mA cm-2下，ORR的半波电位高达0.912 V， OER的过电位低至305 mV。FeNxTey/CoNxTey@NC-based ZABs实现了306.1 mW cm-2的峰值功率密度和773.2 mAh g-1的大比能密度。实验数据表明，n掺杂可以精确调控FeNxTey/CoNxTey@NC（理想理论模型为FeCoN6Te）中原子活性位的结构和高密度分布。密度泛函理论计算表明，当FeN4/CoN4模型（合成催化剂为FeNx/CoNx@NC）转变为FeCoN6Te模型时，Te原子调节了FeCoN6Te模型上Fe和Co的局部电荷密度，进一步促进了FeCoN6Te模型上Fe和Co之间的电荷转移，从而优化了ORR/OER中间体的吸附能。本研究结果将为高性能双金属单原子催化剂的开发铺平道路，用于实际的能量转换应用。

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引用次数: 0

Defect-coordinated Au nanoparticles in carbon nitride for efficient piezo-photocatalytic hydrogen peroxide production 氮化碳中缺陷配位金纳米颗粒用于高效压电光催化过氧化氢生产

IF 17.7 1区化学 Q1 CHEMISTRY, APPLIED

Chinese Journal of Catalysis

Pub Date : 2026-02-01 DOI: 10.1016/S1872-2067(25)64901-1

Na Tian, Chaofan Yuan, Tong Zhou, Wenying Yu, Yinghui Wang, Na Zhang, Yihe Zhang, Hongwei Huang

Hydrogen peroxide (H₂O₂), a versatile green oxidant and energy carrier, faces production challenges due to the energy-intensive anthraquinone process. Photocatalytic H₂O₂ synthesis via the two-electron oxygen reduction reaction (2e^– ORR) offers a sustainable alternative, but its efficiency is limited by sluggish charge transfer and insufficient active sites. Here, we design a dual-modulation strategy that combines defect-induced electronic tuning with piezoelectric polarization to enhance surface catalytic processes. Specifically, anchoring Au nanoparticles on N-deficient graphitic carbon nitride (CNNv-Au) allows N vacancies to modulate the electronic structure of the Au nanoparticles, increasing the proportion of electron-deficient Au^δ+ sites and enhancing Au–O₂ interactions, while the piezoelectric field simultaneously facilitates charge separation and directs electrons toward the adsorbed O₂ molecules. In-situ X-ray photoelectron spectroscopy (XPS) under simulated catalytic conditions revealed a 0.5 eV Au 4f shift toward higher binding energy, confirming enhanced electron transfer from Au^δ+ sites to adsorbed O₂ under light irradiation. Synergistic effects of these modifications elevate the H₂O₂ production rate from 247.0 to 1788.5 μmol g^–1 h^–1, a 7.2-fold enhancement. Combined XPS, electron paramagnetic resonance, density functional theory, and in-situ diffuse reflectance infrared Fourier transformed spectroscopy analyses confirm that N vacancies induce local polarization of Au sites, optimizing O₂ activation and intermediate stabilization. This work demonstrates a dual modulation strategy, defect-induced electronic tuning and piezoelectric polarization, to enhance surface catalytic processes, providing a blueprint for efficient photocatalytic H₂O₂ generation.

过氧化氢（H2O2）是一种多功能的绿色氧化剂和能量载体，由于能源密集型的蒽醌工艺，它的生产面临着挑战。通过双电子氧还原反应（2e - ORR）光催化合成H2O2提供了一种可持续的替代方法，但其效率受到电荷转移缓慢和活性位点不足的限制。在这里，我们设计了一种双调制策略，将缺陷诱导的电子调谐与压电极化相结合，以增强表面催化过程。具体来说，将Au纳米颗粒锚定在缺氮碳氮化碳（CNNv-Au）上，可以使N空位调节Au纳米颗粒的电子结构，增加缺电子Auδ+位的比例，增强Au - O2的相互作用，而压电场同时促进电荷分离并将电子引导到吸附的O2分子上。模拟催化条件下的原位x射线光电子能谱（XPS）显示，0.5 eV Au 4f向更高结合能转移，证实了光照射下Auδ+位点向吸附O2的电子转移增强。这些修饰的协同作用使H2O2产率从247.0 μmol g-1 h-1提高到1788.5 μmol g-1 h-1，提高了7.2倍。结合XPS、电子顺磁共振、密度泛函理论和原位漫反射红外傅立叶变换光谱分析证实，N空位诱导Au位点局部极化，优化O2活化和中间稳定。这项工作展示了双调制策略，缺陷诱导的电子调谐和压电极化，以增强表面催化过程，为有效的光催化生成H2O2提供了蓝图。

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引用次数: 0

From fundamental flaw to manageable parameter: Engineering salt precipitation out of acidic CO2RR for industrial viability 从根本缺陷到可管理的参数：工程盐沉淀从酸性CO2RR工业可行性

IF 17.7 1区化学 Q1 CHEMISTRY, APPLIED

Chinese Journal of Catalysis

Pub Date : 2026-02-01 DOI: 10.1016/S1872-2067(25)64874-1

Genxiang Wang , Zhiwen Lu , Zhenhai Wen

Salt precipitation remains a persistent barrier to industrial CO₂ electrolysis. This Perspective analyzes transformative breakthroughs in acidic systems, elegantly connecting Sargent’s cation-focused interface engineering, Xia’s robust catalyst/reactor design, and Wang’s revolutionary acid humidification strategy into a cohesive industrial pathway. Based on this, we propose that integrating these approaches, combining acid-humidified feeds with durable catalysts and reactor designs, could establish a scalable route to industrial CO₂ electrolysis deployment powered by renewable electricity.

盐沉淀仍然是工业二氧化碳电解的持久障碍。本文分析了酸性系统的革命性突破，将Sargent以阳离子为中心的界面工程、Xia稳健的催化剂/反应器设计和Wang革命性的酸加湿策略巧妙地连接在一起，形成一条连贯的工业路径。基于此，我们建议整合这些方法，将酸加湿进料与耐用的催化剂和反应器设计相结合，可以建立一条可扩展的途径，以可再生电力为动力进行工业二氧化碳电解。

引用次数: 0

Innovative strategies and perspectives for enhancing photoelectrochemical water splitting: Physical field engineering 加强光电化学水分解的创新策略与展望：物理场工程

IF 17.7 1区化学 Q1 CHEMISTRY, APPLIED

Chinese Journal of Catalysis

Pub Date : 2026-02-01 DOI: 10.1016/S1872-2067(25)64894-7

Wenfeng Li, Guocheng Lv, Meng Liu, Fanyue Zhao, Zetian He, Guihong Li, Wenping Wang, Libing Liao, Daimei Chen

Photoelectrochemical (PEC) water splitting efficiently produces chemical fuels, yet persistent efficiency bottlenecks impede widespread deployment despite documented advances. In recent years, the introduction of external physical fields has emerged as a promising technique to remarkably improve the PEC performances of semiconductors both internally and externally. This review presents an in-depth exploration of the mechanisms underlying the utilization of thermal field (photothermal, pyroelectric effect), piezoelectric field (strain piezoelectricity, ferroelectric polarization), magnetic field (negative magnetoresistive effect, lorentz forces, spin polarization), and coupled fields in enhancing the synergistic effects of PEC water splitting, and subsequently analyzes their influence on the performance of PEC systems. It particularly emphasizes the underlying mechanisms that facilitate the strengthening of external fields on the excitation, transfer, and separation of carriers, as well as the enhancement of surface reactions. Additionally, we delve into the expansive prospects of externally assisted PEC water splitting, examining both its fundamental research implications and practical applications. Finally, we discuss the challenges encountered in its development and offer insights into potential future directions.

光电化学（PEC）水分解技术可以高效地生产化学燃料，尽管已有文献记载，但持续存在的效率瓶颈阻碍了该技术的广泛应用。近年来，引入外部物理场已成为一种有前途的技术，可以显着提高半导体内部和外部的PEC性能。本文深入探讨了利用热场（光热、热释电效应）、压电场（应变压电、铁电极化）、磁场（负磁阻效应、洛伦兹力、自旋极化）和耦合场增强PEC水裂解协同效应的机理，并分析了它们对PEC系统性能的影响。它特别强调了促进外场对载流子的激发、转移和分离以及表面反应增强的潜在机制。此外，我们深入研究了外部辅助PEC水裂解的广阔前景，研究了其基础研究意义和实际应用。最后，我们讨论了其发展中遇到的挑战，并提供了对潜在未来方向的见解。

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引用次数: 0

Rational construction of MXene-derived TiO2/CoNiO2 dual-site S-scheme heterojunction for boosting C–C coupling toward efficient photocatalytic CO2-to-C2H4 conversion 合理构建mxene衍生的TiO2/CoNiO2双位点S-scheme异质结，促进C-C耦合，实现高效光催化CO2-to-C2H4转化

IF 17.7 1区化学 Q1 CHEMISTRY, APPLIED

Chinese Journal of Catalysis

Pub Date : 2026-02-01 DOI: 10.1016/S1872-2067(25)64866-2

Yongsheng Hu , Shiji Du , Jihui Lang , Huilian Liu , Xuefei Li , Qi Zhang , Ming Lu , Xin Li , Binrong Li , Maobin Wei , Lili Yang

The CO₂ photoreduction reaction (CO₂RR) into C₂H₄ represents a highly promising technology for converting greenhouse gases into value-added chemicals. However, this technology faces challenges such as a high energy barrier in the C–C coupling process and a slow electron supply efficiency. In this study, we constructed Ti₃C₂ MXene-derived TiO₂/CoNiO₂ S-scheme heterojunction (MTC-X) by a simple in-situ growth process. The Co–Ni dual-site provided the structural foundation for C–C coupling, effectively reducing the energy barrier of the *CO–*COH intermediate coupling step. Meanwhile, the S-scheme heterojunction ensured the rapid supply of electrons and protons during the CO₂RR, thereby enabling the efficient conversion of CO₂ to C₂H₄. Notably, the MTC-2 sample exhibited the C₂H₄ production rate of 25.2 μmol/(g·h), which was 23 times higher than that of the pure CoNiO₂. In summary, by combining in-situ X-ray photoelectron spectroscopy, in-situ Kelvin probe force microscopy, femtosecond transient absorption spectroscopy and difference charge density calculation, confirmed the formation of the TiO₂/CoNiO₂ S-scheme heterojunction. Further, by photoelectrochemical tests, in-situ Fourier transform infrared spectroscopy, Gibbs free-energy calculations, elucidated the mechanism by which the Co–Ni dual-site structure and S-scheme heterojunction synergistically enhance the C–C coupling kinetic process. This provides new experimental reference and theoretical basis for the selective conversion of CO₂ to C₂H₄.

CO2光还原反应（CO2RR）生成C2H4是将温室气体转化为增值化学品的一种非常有前途的技术。然而，该技术面临着C-C耦合过程中的高能量势垒和电子供应效率慢等挑战。在这项研究中，我们通过简单的原位生长工艺构建了Ti3C2 mxene衍生的TiO2/CoNiO2 S-scheme异质结（MTC-X）。CO - ni双位点为C-C偶联提供了结构基础，有效降低了*CO - *COH中间偶联步骤的能垒。同时，s型异质结保证了CO2RR过程中电子和质子的快速供应，从而实现了CO2到C2H4的有效转化。MTC-2的C2H4产率为25.2 μmol/(g·h)，是纯CoNiO2的23倍。综上所述，通过结合原位x射线光电子能谱、原位开尔文探针力显微镜、飞秒瞬态吸收光谱和差分电荷密度计算，证实了TiO2/CoNiO2 S-scheme异质结的形成。此外，通过光电化学测试、原位傅里叶变换红外光谱、吉布斯自由能计算，阐明了Co-Ni双位结构和s型异质结协同增强C-C耦合动力学过程的机理。这为CO2选择性转化为C2H4提供了新的实验参考和理论依据。

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引用次数: 0

Direct electrochemical liquid ammonia splitting for onsite hydrogen generation under room temperature 常温下直接电化学液氨裂解现场制氢

IF 17.7 1区化学 Q1 CHEMISTRY, APPLIED

Chinese Journal of Catalysis

Pub Date : 2026-02-01 DOI: 10.1016/S1872-2067(25)64915-1

Miao-Miao Shi , Yue-Xuan He , Ning Zhang , Di Bao , Da-Ming Zhao , Hai-Xia Zhong , Jun-Min Yan , Qing Jiang

Ammonia (NH₃) is seen to be promising hydrogen carrier, but its decomposition into hydrogen (H₂) has been plagued by high operating temperature (400‒700 °C) and long start-up time. Here, we present that directly electrochemical liquid NH₃ decomposition (ELADH) method could realize efficient onsite H₂ generation at room-temperature, whereas active and stable electrocatalytic system is challenging. Through rationally optimizing the electrolysis system with Ru catalysts, we achieved an active and durable ELADH into H₂ under ambient temperature. It was found that Ru nanoparticles (Ru NPs) with (101) facet could effectively promote the favorable N-H dissociation and hydrogen desorption, and thus accelerate the slow reaction kinetics. The as-prepared Ru NPs on nitrogen carbon exhibit lower potential of ‒1.01 V vs. NHE at ‒10 mA cm^‒2 and larger current density of ‒910 mA cm^‒2 at ‒1.47 V vs. NHE, superior to Ru single atoms and commercial Pt/C. Importantly, this system affords stable H₂ evolution under 100 h continuous electrolysis without apparent degradation, far beyond the reported catalysts. This work paves the new way of room-temperature onsite H₂ production and presents insightful understanding of the electrochemical liquid ammonia splitting process.

氨（NH3）是一种很有前途的氢载体，但其分解为氢（H2）一直受到操作温度高（400-700℃）和启动时间长的困扰。在此，我们提出了直接电化学液体NH3分解（ELADH）方法可以在室温下实现高效的现场制氢，而活性和稳定的电催化系统是一个挑战。通过合理优化Ru催化剂的电解系统，在常温下实现了活性持久的ELADH制氢。研究发现，具有（101）facet的Ru纳米颗粒（Ru NPs）能够有效促进N-H的良好解离和氢的脱附，从而加快慢反应动力学。在氮碳上制备的钌NPs在-10 mA cm-2时比NHE电位低-1.01 V，在-1.47 V比NHE电流密度大-910 mA cm-2，优于钌单原子和商用Pt/C。重要的是，该系统在连续电解100 h下提供稳定的氢气析出，没有明显的降解，远远超过报道的催化剂。本研究为室温现场制氢开辟了新途径，对电化学液氨裂解工艺有了深刻的认识。

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引用次数: 0

Solar-driven CO2-to-chemical conversion via S-scheme photocatalysis and tandem carbonylation 通过s方案光催化和串联羰基化，太阳能驱动的二氧化碳到化学的转化

IF 17.7 1区化学 Q1 CHEMISTRY, APPLIED

Chinese Journal of Catalysis

Pub Date : 2026-02-01 DOI: 10.1016/S1872-2067(25)64902-3

Kezhen Qi , Bei Cheng , Mahboobeh Setayeshmehr , Alireza Z. Moshfegh

引用次数: 0

Recycling of PVC tarpaulin reinforced with PET through glycolysis using betaine, a bio-based catalyst 生物基催化剂甜菜碱糖酵解法回收PET增强PVC篷布

IF 17.7 1区化学 Q1 CHEMISTRY, APPLIED

Chinese Journal of Catalysis

Pub Date : 2026-02-01 DOI: 10.1016/S1872-2067(25)64867-4

Jae Kyun Kim , Yejin Won , Jeonghoon Yoon , Kyung Min Lee , Yeyoon Choi , Dong Hyun Kim , Kyoung Heon Kim

Polyvinyl chloride (PVC) tarpaulins reinforced with poly(ethylene terephthalate) (PET) fibers are widely used in various industrial applications. However, the increasing demand for recycling PVC tarpaulin waste poses challenges because of the difficulty in separating the two different plastics. In this study, we investigated the possibility of recycling PVC and PET through the glycolysis of PET. The milled PVC tarpaulin underwent a glycolysis process, selectively depolymerizing the PET fibers into water-soluble bis(2-hydroxyethyl) terephthalate (BHET), while the PVC was removed by filtration. The PET fibers were selectively depolymerized by 77.6% after reacting at 190 °C for 2 h in the presence of 0.5% (w/w) betaine as a catalyst, quantitatively yielding BHET. During glycolysis, the physical appearance of the PVC changed because of leaching of the plasticizer, however, no dechlorination or shortening of the PVC polymer was observed. Interestingly, additives in PVC, such as CaCO₃ and CZ-stabilizer, act as catalysts for glycolysis, thereby enhancing PET depolymerization. The recovered PVC, when blended into a PVC formulation, maintained its mechanical properties and appearance up to 40 parts per hundred resins in roll-mill-processed sheets. In addition, ethylene glycol, which is used as a solvent in glycolysis, can be reused up to three times without the additional removal of BHET. This study demonstrated an industrially applicable method for simultaneously recycling PVC and PET from widely used tarpaulins.

用聚对苯二甲酸乙酯（PET）纤维增强的聚氯乙烯（PVC）防水布广泛应用于各种工业应用。然而，由于难以分离这两种不同的塑料，对回收PVC篷布废料的需求日益增加，这带来了挑战。在本研究中，我们探讨了通过PET的糖酵解回收PVC和PET的可能性。经糖酶解加工后的PVC篷布，选择性地将PET纤维解聚成水溶性的对苯二甲酸乙二醇酯（BHET），同时通过过滤去除PVC。在0.5% （w/w）甜菜碱的催化下，在190℃下反应2 h， PET纤维选择性解聚率为77.6%，定量产bet。在糖酵解过程中，由于增塑剂的浸出，PVC的物理外观发生了变化，然而，没有观察到PVC聚合物的脱氯或缩短。有趣的是，PVC中的添加剂，如CaCO3和cz稳定剂，作为糖酵解的催化剂，从而促进PET解聚。当将回收的PVC混合到PVC配方中时，在滚磨加工的板材中保持其机械性能和外观高达百分之四十。此外，作为糖酵解溶剂的乙二醇可以重复使用多达三次，而无需额外去除BHET。本研究展示了一种工业上适用的方法，可以同时从广泛使用的篷布中回收PVC和PET。

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引用次数: 0