Oxide–Zeolite-Based Composite Catalyst Concept That Enables Syngas Chemistry beyond Fischer–Tropsch Synthesis,Chemical Reviews

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Oxide–Zeolite-Based Composite Catalyst Concept That Enables Syngas Chemistry beyond Fischer–Tropsch Synthesis
Chemical Reviews ( IF 51.4 ) Pub Date : 2021-05-25 , DOI: 10.1021/acs.chemrev.0c01012
Xiulian Pan ₁ , Feng Jiao ₁ , Dengyun Miao ₁ , Xinhe Bao ₁

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Syngas chemistry has been under study since Fischer–Tropsch synthesis (FTS) was invented in the 1920s. Despite the successful applications of FTS as the core technology of coal-to-liquid and gas-to-liquid processes in industry, the product selectivity control of syngas conversion still remains a great challenge, particularly for value-added chemicals such as light olefins. Recent studies show that the catalyst design concept of OXZEO (oxide–zeolite-based composite) enables direct syngas conversion to mixed light olefins with a selectivity reaching 80% and to ethylene with a selectivity of 83% among hydrocarbons. They both well-surpass the limits predicated by the Anderson–Schultz–Flory model via the conventional FTS route (58% and 30%, respectively). Furthermore, this catalyst concept allows one-step synthesis of gasoline-range isoparaffins and aromatic compounds, which is otherwise not possible in conventional FTS. A rapidly growing number of studies demonstrate the versatility of this concept and may form a technology platform for utilization of carbon resources including coal, natural gas, and biomass via syngas to a variety of basic chemicals and fuels. However, the selectivity control mechanism is far from being understood. Therefore, we focus mainly on the catalytic roles of the bifunctionalities of OXZEO while reviewing the development of bifunctional catalysts for selective syngas conversion by taking syngas-to-light olefins as an example. With this, we intend to provide insights into the selectivity control mechanism of the OXZEO concept in order to understand the challenges and prospects for future development of much more active and more selective catalysts.

中文翻译：

基于氧化物-沸石的复合催化剂概念，使合成气化学超越费-托合成

自 1920 年代发明了费托合成 (FTS) 以来，合成气化学一直在研究之中。尽管FTS作为煤制液和气制液工艺的核心技术在工业上得到了成功应用，但合成气转化的产品选择性控制仍然是一个巨大的挑战，特别是对于轻烯烃等增值化学品。最近的研究表明，OXZEO（氧化物-沸石基复合材料）的催化剂设计概念能够将合成气直接转化为混合轻烯烃，选择性达到 80%，乙烯选择性达到 83%。它们都通过传统的 FTS 路线（分别为 58% 和 30%）远远超过了 Anderson-Schultz-Flory 模型预测的限制。此外，这种催化剂概念允许一步合成汽油范围内的异链烷烃和芳香族化合物，这在传统的 FTS 中是不可能的。越来越多的研究证明了这一概念的多功能性，并可能形成一个技术平台，用于通过合成气将煤炭、天然气和生物质等碳资源转化为各种基本化学品和燃料。然而，选择性控制机制还远远没有被理解。因此，我们主要关注OXZEO双功能的催化作用，同时以合成气-轻烯烃为例回顾了用于选择性合成气转化的双功能催化剂的发展。有了这个，

更新日期：2021-06-09

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