Catalysis Today最新文献_第8页

C1 chemistry and catalysis: Current advances and future perspectives C1化学与催化：当前进展与未来展望

IF 5.3 2区化学 Q1 CHEMISTRY, APPLIED

Catalysis Today

Pub Date : 2025-10-01 DOI: 10.1016/j.cattod.2025.115583

Andrei Y. Khodakov , Vitaly V. Ordomsky , Xiulian Pan

引用次数: 0

Topology-acidity-catalytic activity interplay in hierarchical nanolayered aluminosilicate zeolites for Friedel-Crafts alkylation 层叠纳米级铝硅酸盐沸石的拓扑-酸性-催化活性相互作用及其对Friedel-Crafts烷基化的影响

IF 5.3 2区化学 Q1 CHEMISTRY, APPLIED

Catalysis Today

Pub Date : 2025-09-30 DOI: 10.1016/j.cattod.2025.115580

Oleksiy V. Shvets , Mykhailo M. Kurmach , Michal Mazur , Petr Golis , Pavlo S. Yaremov , Oleg Petrov , Nataliya D. Shcherban , Jiři Čejka , Mariya V. Shamzhy

Nanolayered zeolites are at the forefront of research as efficient catalysts for reactions involving bulky molecules. To date, various zeolites have been synthesized in nanolayered form via direct hydrothermal crystallization using Gemini-type surfactants, and their enhanced catalytic performance has been demonstrated in acid-catalyzed transformations of bulky substrates. However, the influence of zeolite topology on the strength and coordination environment of surface acid sites and its effect on catalytic behavior remains insufficiently understood. This study explores topology-acidity-activity relationships using a series of nanolayered aluminosilicate zeolites with FER, MFI, MOR, and BEA topologies in the alkylation of mesitylene with benzyl alcohol as a surface-acid-site-sensitive model reaction. In situ FTIR-monitored thermodesorption of substituted pyridines showed comparable surface Brønsted acid strength across the zeolites, while ²⁷Al MAS NMR spectroscopy revealed a topology-dependent increase in fraction of distorted tetrahedral Al sites: MFI (21 %) < FER (30 %) < MOR (57 %) < BEA (64 %). Catalytic activity increased with surface-accessible Brønsted acid site concentration (mmol/g) or density (mmol/m²) in nanolayered MFI, FER, and MOR, with FER showing the highest yield (37 %) and selectivity (84 %). This trend was disrupted in BEA, which, despite the reasonably high surface Brønsted acid site concentration, showed lower activity. The findings of this study highlight the impact of topology-dependent structural features on catalytic performance of nanolayered zeolites.

纳米层沸石作为大分子反应的高效催化剂，处于研究的前沿。迄今为止，各种沸石已经通过使用gemini型表面活性剂通过直接水热结晶以纳米层形式合成，并且它们的增强催化性能已经在酸催化转化大块底物中得到证明。然而，沸石拓扑结构对表面酸位强度和配位环境的影响及其对催化行为的影响尚不清楚。本研究使用一系列具有FER、MFI、MOR和BEA拓扑结构的纳米层铝硅酸盐沸石作为表面酸位敏感模型反应，探索了拓扑-酸-活性关系。原位红外监测取代吡啶的热脱附显示沸石表面Brønsted酸强度相当，而27Al MAS NMR显示扭曲四面体Al位点的拓扑依赖性增加：MFI (21%) <； FER (30%) <； MOR (57%) <； BEA（64%）。纳米层MFI、FER和MOR的催化活性随表面可达Brønsted酸位浓度（mmol/g）或密度（mmol/m2）的增加而增加，其中FER的产率最高（37%），选择性最高（84%）。这一趋势在BEA中被打破，尽管表面Brønsted酸位点浓度相当高，但活性较低。本研究结果强调了拓扑依赖的结构特征对纳米层沸石催化性能的影响。

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引用次数: 0

Low dimensional inorganic materials as electrocatalysts: Experimental and theoretical perspectives 低维无机材料作为电催化剂：实验和理论的观点

IF 5.3 2区化学 Q1 CHEMISTRY, APPLIED

Catalysis Today

Pub Date : 2025-09-29 DOI: 10.1016/j.cattod.2025.115581

Ranjit Thapa , Uttam Kumar Ghorai , Ramendra Sundar Dey , Puru Jena , Yoshiyuki Kawazoe

引用次数: 0

Influence of zeolite hydrophilicity and hydrophobicity on water-assisted polyethylene hydrocracking 沸石亲疏水性对水助聚乙烯加氢裂化的影响

IF 5.3 2区化学 Q1 CHEMISTRY, APPLIED

Catalysis Today

Pub Date : 2025-09-26 DOI: 10.1016/j.cattod.2025.115578

Taeeun Kwon , Jaewoo Kim , Ki Hyuk Kang , Wangyun Won , Insoo Ro

The catalytic upcycling of polyethylene (PE) remains a major challenge in sustainable waste management. This study demonstrates that water promotes PE hydrocracking over Ru/zeolite catalysts only when the support framework is strongly hydrophilic, as in HY and HMOR. Systematic characterization reveals that this promotional effect is governed by surface wettability, rather than acidity or metal dispersion. Thermodynamic analysis confirms that water and PE are immiscible under reaction conditions, ruling out direct water–polymer interactions. Instead, water preferentially associates with hydrophilic catalyst surfaces, promoting Brønsted acid activity through confined hydration. Controlled experiments show that direct contact between water and the catalyst is essential for enhanced reactivity; spatial separation between the two leads to suppressed conversion, likely due to unfavorable interactions between water and the molten polymer. These findings highlight the mechanistic role of interfacial water–catalyst accessibility and establish catalyst hydrophilicity as a key design parameter for reliable and efficient water-assisted hydrocracking. The results have practical implications for processing moisture-containing plastic waste streams.

催化聚乙烯（PE）的升级回收仍然是可持续废物管理的主要挑战。该研究表明，只有在支持框架具有强亲水性的情况下，如HY和HMOR，水才能促进Ru/沸石催化剂上PE的加氢裂化。系统表征表明，这种促进作用是由表面润湿性决定的，而不是酸度或金属分散。热力学分析证实，在反应条件下，水和PE是不可混溶的，排除了水与聚合物直接相互作用的可能性。相反，水优先与亲水性催化剂表面结合，通过受限水合作用促进Brønsted酸活性。对照实验表明，水与催化剂的直接接触是提高反应活性的必要条件；两者之间的空间分离导致抑制转化，可能是由于水和熔融聚合物之间不利的相互作用。这些发现强调了界面水-催化剂可及性的机理作用，并将催化剂亲水性作为可靠、高效的水助加氢裂化的关键设计参数。该结果对处理含湿塑料废物流具有实际意义。

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引用次数: 0

Cyclometalated dinuclear iridium(III) complex with 2,2'-bipyridyl-based bridging ligand as a photosensitizer for photochemical hydrogen evolution reaction 环金属化双核铱（III）配合物与2,2'-联吡啶桥接配体作为光化学析氢反应的光敏剂

IF 5.3 2区化学 Q1 CHEMISTRY, APPLIED

Catalysis Today

Pub Date : 2025-09-24 DOI: 10.1016/j.cattod.2025.115579

Junya Omaki, Natsumi Yano, Yusuke Kataoka

A new cyclometalated dinuclear iridium complex with a 1,2-bis(4′-methyl-2,2'-bipyridin-4-yl)ethane (bmbe) bridging ligand, [Ir₂(ppy)₄(bmbe)](PF₆)₂ (IrPS-D; ppy = 2-phenylpyridinate), which is anticipated to function as a highly efficient photosensitizer (PS) for the photochemical hydrogen evolution reaction, is synthesized and structurally characterized via ¹H NMR, ESI-TOF-MS, ATR-FT-IR, elemental analysis, and single crystal X-ray diffraction analyses. The combination of spectroscopic analysis and time-dependent density functional theory calculations clarifies that (i) the visible-light absorption spectrum of IrPS-D exhibits a shape and excitation features almost identical to those of [Ir(ppy)₂(dmbpy)]PF₆ (IrPS-M; dmbpy = 4,4'-dimethyl-2,2′-bipyridine), which is a well-known promising PS for the photochemical hydrogen evolution reaction and mononuclear counterpart of IrPS-D, whereas the spectral intensity of IrPS-D is approximately twice as high as that of IrPS-M; (ii) the emission energies of IrPS-D and IrPS-M are nearly identical; however, IrPS-D exhibits a slightly shorter emission lifetime and higher quantum yield compared with those of IrPS-M, resulting in relatively faster radiative and non-radiative rate constants for IrPS-D compared with those of IrPS-M; and (iii) the excited state of IrPS-D is quenched by triethylamine (TEA) faster than that of IrPS-M. Upon visible-light irradiation, IrPS-D serves as a highly efficient PS for the photochemical hydrogen evolution reaction in the presence of K₂PtCl₄ and TEA, which function as the hydrogen evolution catalyst and sacrificial electron donor, respectively. The maximum turnover number (TON_PS) of IrPS-D for hydrogen evolution is 2672, which is approximately 4.75 times greater than that of IrPS-M (TON_PS = 563) under the same reaction conditions.

合成了一种新的环金属化双核铱配合物，其具有1,2-二（4 '-甲基-2,2'-联吡啶-4-基）乙烷（bmbe）桥接配体[Ir2(ppy)4(bmbe)](PF6)2 （IrPS-D; ppy = 2-苯基吡啶），有望作为光化学析氢反应的高效光敏剂（PS），并通过1H NMR、ESI-TOF-MS、ATR-FT-IR、元素分析和单晶x射线衍射分析对其进行了结构表征。光谱分析和时变密度泛函理论计算的结合表明：(1)IrPS-D的可见光吸收光谱具有与[Ir(ppy)2(dmbpy)]PF6 （IrPS-M）几乎相同的形状和激发特征；dmbpy = 4,4'-二甲基-2,2 '-联吡啶)，是一种众所周知的光化学析氢反应的有前途的PS，也是IrPS-D的单核对应物，而IrPS-D的光谱强度大约是IrPS-M的两倍；（ii） IrPS-D和IrPS-M的发射能量几乎相同；然而，与IrPS-M相比，IrPS-D的发射寿命略短，量子产率略高，因此IrPS-D的辐射和非辐射速率常数相对较快；(3)三乙胺（TEA）对IrPS-D激发态的猝灭作用比IrPS-M更快。在可见光照射下，在K2PtCl4和TEA存在下，IrPS-D作为光化学析氢反应的高效PS， K2PtCl4和TEA分别作为析氢催化剂和牺牲电子给体。IrPS-D的最大析氢翻转数（TONPS）为2672，是IrPS-M （TONPS = 563）的4.75倍。

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引用次数: 0

Hydrogen production from aqueous formic acid solution using Pt/Cs with different preparation methods 不同制备方法下Pt/Cs在甲酸水溶液中制氢

IF 5.3 2区化学 Q1 CHEMISTRY, APPLIED

Catalysis Today

Pub Date : 2025-09-23 DOI: 10.1016/j.cattod.2025.115575

Shuka Murakami, Hiroyasu Fujitsuka, Motoaki Kawase

Formic acid is a promising hydrogen carrier because of its high hydrogen content and small enthalpy of dehydrogenation. Hydrogen is generally produced from formic acid via liquid-phase decomposition over catalysts. Catalysts consisting of noble metals that are stable in acidic solutions and carbon supports without acidic sites causing side reactions have several advantages, such as the high activity and ease of separation. To enhance catalytic activity, the surface area of the active metal should be increased. However, conventional impregnation methods are not completely suitable for this purpose because of the weak metal–carbon interactions. To solve this problem, a preparation method using an ion-exchange resin as a precursor for the carbon support was employed. In this study, we investigated the effect of the preparation method of carbon-supported Pt catalysts on their catalytic activity for the liquid-phase decomposition of formic acid. The catalysts prepared from ion-exchange resins exhibited Pt loadings of approximately 26–28 wt% and Pt particle sizes of 2–3 nm; therefore, this method can realize a higher dispersion degree of Pt nanoparticles than an impregnation method. Moreover, the produced catalysts demonstrated a higher activity for the dehydrogenation of formic acid than those of the catalysts prepared by the impregnation method. Additionally, the carbonization temperature strongly affected the catalyst properties, such as the pore size and metal accessibility. Consequently, the catalyst activity for the decomposition of formic acid varied depending on the carbonization temperature. We also formulated a new reaction model considering hydrogen adsorption.

甲酸具有氢含量高、脱氢焓小等优点，是一种很有前途的氢载体。氢通常是由甲酸通过催化剂的液相分解产生的。由在酸性溶液中稳定的贵金属和不产生副反应的碳载体组成的催化剂具有高活性和易于分离等优点。为了提高催化活性，必须增加活性金属的表面积。然而，由于金属-碳相互作用弱，传统的浸渍方法并不完全适用于这一目的。为了解决这一问题，采用离子交换树脂作为碳载体前驱体的制备方法。在本研究中，我们研究了碳负载Pt催化剂的制备方法对其液相分解甲酸催化活性的影响。离子交换树脂制备的催化剂的Pt负载约为26-28 wt%， Pt粒度为2-3 nm；因此，该方法可以实现比浸渍法更高的Pt纳米颗粒分散程度。制备的甲酸脱氢催化剂比浸渍法制备的甲酸脱氢催化剂具有更高的脱氢活性。此外，炭化温度对催化剂的孔径和金属可及性等性能也有较大影响。因此，甲酸分解的催化剂活性随炭化温度的变化而变化。我们还建立了一个考虑氢吸附的新反应模型。

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引用次数: 0

Enhancing CO2 hydrogenation via spatially engineered bifunctional catalysts: Toward selective C8–10 aromatics for sustainable aviation fuel 通过空间工程双功能催化剂增强CO2加氢：面向可持续航空燃料的选择性C8-10芳烃

IF 5.3 2区化学 Q1 CHEMISTRY, APPLIED

Catalysis Today

Pub Date : 2025-09-23 DOI: 10.1016/j.cattod.2025.115574

Hyeonji Yeom, Yongseok Kim, Hanbit Jang, Jongmin Park, Seongeun Kim, Kyungsu Na

The direct CO₂ hydrogenation into liquid-phase hydrocarbons offers a sustainable route for carbon recycling, yet achieving high selectivity toward sustainable aviation fuel-range aromatic compounds remains challenging. Here, we report a bifunctional catalyst system composed of FeK-loaded CuAl₂O₄-based catalyst (FeK/CAO) and a nanosheet MFI-type zeolite (NS-HMFI) with hierarchical porosity for the selective production of C_8–10 aromatic hydrocarbons. Structural and compositional characterizations confirmed the mesoporous architecture and strong acidity of NS-HMFI and the multifunctional activity of FeK/CAO in CO₂ activation and C–C coupling. By engineering the spatial proximity between the two catalysts through four integration methods such as physical mixture (PM), granule mixture (GM), dual-bed system (DB), and multi-bed system (MB), we elucidated the relationship between proximity and catalytic performance. Among the systems tested, the GM system achieved the highest CO₂ conversion (39.2 %) with the lowest CO selectivity (13.0 %) due to enhanced CO₂ adsorption and dissociation facilitated by potassium migration and increased surface basicity. Conversely, the DB system, with minimal catalyst proximity, promoted the highest aromatic distribution and enabled selective conversion of light olefins into C_8–10 aromatics. All systems integrating NS-HMFI showed >95 % distribution for C_8–10 aromatics among total aromatics, highlighting the critical role of external acid sites in mesoporous zeolites. This work demonstrates a proximity-controlled catalytic approach for efficient CO₂ hydrogenation to SAF-range aromatics and provides mechanistic insights into the design of multifunctional hybrid catalysts.

二氧化碳直接加氢成液相碳氢化合物为碳循环提供了一条可持续的途径，但实现可持续航空燃料芳香族化合物的高选择性仍然具有挑战性。本文报道了一种由负载FeK的cual2o4基催化剂（FeK/CAO）和具有分层孔隙度的纳米片mfi型沸石（NS-HMFI）组成的双功能催化剂体系，用于选择性生产C8-10芳烃。结构和组成表征证实了NS-HMFI的介孔结构和强酸性，以及FeK/CAO在CO2活化和C-C耦合中的多功能活性。通过物理混合（PM）、颗粒混合（GM）、双床系统（DB）和多床系统（MB）四种整合方法对两种催化剂之间的空间接近性进行工程设计，阐明了接近性与催化性能之间的关系。在所测试的体系中，由于钾迁移促进了CO2的吸附和解离，增加了表面碱度，GM体系的CO2转化率最高（39.2 %），CO选择性最低（13.0 %）。相反，在催化剂接近度最小的情况下，DB体系促进了最高的芳烃分布，并使轻烯烃选择性转化为C8-10芳烃。所有整合NS-HMFI的体系中，C8-10芳烃在总芳烃中的分布为>；95 %，突出了介孔沸石中外部酸位的关键作用。这项工作证明了一种接近控制的催化方法，可以有效地将二氧化碳加氢转化为saf范围的芳烃，并为多功能混合催化剂的设计提供了机理上的见解。

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引用次数: 0

Preparation and application of film-like mesoporous MgO-supported Cu-Zn-Co trimetallic catalyst for selective hydrogenation of furfural to furfuryl alcohol 膜状介孔mgo负载Cu-Zn-Co三金属催化剂的制备及应用

IF 5.3 2区化学 Q1 CHEMISTRY, APPLIED

Catalysis Today

Pub Date : 2025-09-22 DOI: 10.1016/j.cattod.2025.115577

Zihuai Xu , Jiasheng Wang , Xiujuan Feng , Sheng Zhang , Xiaoqiang Yu , Xuan Zhang , Ming Bao

A film-like MgO-supported trimetallic catalysts CuZnCo/MgO/CNFs were prepared for selective hydrogenation of furfural into furfuryl alcohol for the first time. The hydrogenation reaction of furfural proceeded smoothly in the presence of the optimal catalyst CuZn_0.125Co_0.5/MgO/CNFs under mild conditions to provide the desired product furfuryl alcohol in quantitative yield with nearly 100 % selectivity. The catalyst CuZn_0.125Co_0.5/MgO/CNFs could be easily recycled by a magnet due to its magnetic property and reused for several times without deactivation. The structure of the catalyst CuZn_0.125Co_0.5/MgO/CNFs was characterized by using various techniques such as scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The high catalytic activity of CuZn_0.125Co_0.5/MgO/CNFs is attributed to the synergistic effect of the three metals (Cu, Zn, and Co).

首次制备了一种膜状MgO负载型三金属催化剂CuZnCo/MgO/CNFs，用于糠醛选择性加氢制备糠醇。在最佳催化剂CuZn0.125Co0.5/MgO/CNFs的存在下，糠醛加氢反应在温和条件下进行顺利，得到了定量收率接近100% %选择性的糠醛醇。CuZn0.125Co0.5/MgO/CNFs催化剂由于其磁性可以很容易地被磁铁回收，并且可以多次重复使用而不失活。采用扫描电镜、透射电镜、x射线衍射、x射线光电子能谱等技术对CuZn0.125Co0.5/MgO/CNFs催化剂的结构进行了表征。CuZn0.125Co0.5/MgO/CNFs具有较高的催化活性是由于三种金属（Cu、Zn和Co）的协同作用。

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引用次数: 0

Low-temperature CO2 hydrogenation to methanol on Cu-doped Au/ZrO2: Effect of Cu doping on hydrogen activation Cu掺杂Au/ZrO2的低温CO2加氢制甲醇：Cu掺杂对氢活化的影响

IF 5.3 2区化学 Q1 CHEMISTRY, APPLIED

Catalysis Today

Pub Date : 2025-09-20 DOI: 10.1016/j.cattod.2025.115573

Katsutoshi Nomoto , Yuichiro Okuzumi , Takumi Nakagawa , Hiroki Miura , Tetsuya Shishido

CO₂ hydrogenation to methanol is one of the most promising routes for CO₂ utilization. In CO₂ hydrogenation, low temperatures and high pressures are thermodynamically favorable for high CO₂ conversion and methanol selectivity. However, owing to the difficulty in activating CO₂ at low temperatures, developing catalysts that function under mild conditions is a significant challenge. In this study, we demonstrate that ZrO₂-supported Au nanoparticles promote the hydrogenation of CO₂ to produce CH₃OH under mild conditions (160 °C, 4 MPa, H₂/CO₂ molar ratio = 3), whereas the conventional Cu-based catalyst shows no activity. Methanol selectivity improved by adding a trace amount of Cu (based on ≤0.3 wt%) to Au/ZrO₂. Compared with Au/ZrO₂, Au–Cu/ZrO₂ maintained a high methanol production rate and suppressed CO production, resulting in improved methanol selectivity. Based on kinetic analysis, in situ infrared spectroscopy, structural characterization, and OH–D₂ exchange, we propose that the addition of a trace amount of Cu to Au/ZrO₂ suppresses CO production via formate decomposition owing to the decrease in the spillover rate of hydrogen from the Au nanoparticles to ZrO₂, resulting in improved methanol selectivity.

CO2加氢制甲醇是CO2利用最有前途的途径之一。在CO2加氢过程中，低温和高压在热力学上有利于CO2的高转化率和甲醇的选择性。但是，由于很难在低温条件下活化CO₂，因此开发在温和条件下也能发挥作用的催化剂是一个巨大的挑战。在这项研究中，我们证明了负载ZrO₂的Au纳米颗粒在温和的条件下（160 °C, 4 MPa， H₂/CO₂摩尔比= 3）促进CO₂加氢生成CH₃OH，而传统的cu基催化剂没有表现出活性。在Au/ZrO₂中加入微量Cu（基于≤0.3 wt%），提高了甲醇的选择性。与Au/ZrO₂相比，Au - cu /ZrO₂保持了较高的甲醇收率，抑制了CO的产生，从而提高了甲醇的选择性。基于动力学分析、原位红外光谱、结构表征和OH-D2交换，我们提出在Au/ZrO2中添加微量Cu可以抑制甲酸分解产生CO，这是由于Au纳米颗粒向ZrO2中氢的溢出速率降低，从而提高了甲醇的选择性。

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引用次数: 0

Coupling property-optimized Ru/Beta catalysts with advanced open batch distillation reactors for waste polyethylene hydrocracking Ru/Beta催化剂与先进开放式蒸馏反应器的偶联性能优化

IF 5.3 2区化学 Q1 CHEMISTRY, APPLIED

Catalysis Today

Pub Date : 2025-09-20 DOI: 10.1016/j.cattod.2025.115576

Hankyeul Kang, Tae Hoon Lee, Jong Hun Kang

Plastic waste, particularly from polyolefins such as polyethylene (PE), poses an escalating environmental burden due to its chemical inertness and volume. Pyrolysis is commercialized process that offers a practical solution for recycling plastic waste, but it is limited by high temperature requirements, substantial energy consumption, and high proportion of olefinic products. Hydrocracking with bifunctional catalysts under optimized conditions presents a promising alternative.

Here, we developed a property-optimized Ru/Beta catalyst system combined with a pressurized open batch distillation reactor for the selective hydrocracking of waste PE into C₅–C₃₀ hydrocarbons. Zeolite Beta supports with varied Si/Al ratios and crystal sizes were synthesized to control Brønsted acid site distribution and external surface area. The controlled properties influenced Ru nanoparticle dispersion, hydrogen activation, and overall catalytic activity. Nano-sized zeolite Beta supports exhibited the highest Ru dispersion and facilitated efficient hydrocracking. The open batch reactor configuration enabled real-time vapor-phase separation of volatile products, minimizing secondary cracking. Under optimized conditions (280 °C, 40 H₂ bar), Ru/nanosized Beta with (Si/Al=10) achieved over an 80 % PE conversion and a 50 % selectivity toward C₅–C₃₀ liquid hydrocarbons. Product analysis using GC-FID, GPC, and ¹H NMR confirmed the formation of branched alkanes with a narrow molecular weight distribution in the C₅–C₁₅ range. This work underscores the critical role of metal–acid site balance, nanoscale catalyst engineering, and dynamic reactor operation in achieving selective and efficient polyolefin hydrocracking.

塑料废物，特别是来自聚乙烯（PE）等聚烯烃的塑料废物，由于其化学惰性和体积，造成了日益严重的环境负担。热解是一种商业化的工艺，为塑料废弃物的回收利用提供了切实可行的解决方案，但存在温度要求高、能耗大、烯烃产物比例高等限制。在优化条件下，双功能催化剂加氢裂化是一种很有前景的选择。在这里，我们开发了一种性能优化的Ru/Beta催化剂体系，结合加压开放式蒸馏反应器，用于将废PE选择性加氢裂化成C5-C30烃。合成了不同Si/Al比和晶体尺寸的沸石β载体，以控制Brønsted酸位分布和外表面积。受控制的性质影响钌纳米颗粒的分散、氢活化和整体催化活性。纳米沸石β载体表现出最高的Ru分散性，促进了高效的加氢裂化。开放式间歇反应器配置实现了挥发性产物的实时气相分离，最大限度地减少了二次裂解。在优化条件下（280 °C, 40 H2 bar）， Ru/纳米尺寸β (Si/Al=10)的PE转化率超过80%，对C5-C30液态烃的选择性超过50%。通过GC-FID、GPC和¹H NMR对产物进行分析，证实在C5-C15范围内形成了分子量分布较窄的支链烷烃。这项工作强调了金属-酸位点平衡、纳米级催化剂工程和动态反应器操作在实现选择性和高效聚烯烃加氢裂化中的关键作用。

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引用次数: 0