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Recent Advances in Direct Synthesis of Value-Added Aromatic Chemicals from Syngas by Cascade Reactions over Bifunctional Catalysts.
Advanced Materials ( IF 29.4 ) Pub Date : 2019-02-15 , DOI: 10.1002/adma.201803390
Saravanan Kasipandi 1 , Jong Wook Bae 1
Affiliation  

Value-added aromatic monomers such as benzene, toluene, and xylenes (BTX) are very important building-block chemicals for the production of plastics, polymers, solvents, pesticides, dyes, and adhesives. Syngas-to-aromatics (STA) is a very promising approach for the synthesis of aromatic monomers, and is catalyzed via bifunctional catalysts in a single reactor, wherein methanol/dimethyl ether and/or olefins intermediates formed from syngas on metal components are converted into aromatic monomers exclusively on the HZSM-5 by cascade reactions. Since an optimal Fischer-Tropsch synthesis (FTS) temperature of Fe-based catalysts is very close to an aromatization temperature of HZSM-5, Fe-based catalysts have been frequently used/modified for the synthesis of aromatic monomers from hydrogenation of carbon oxides (CO and CO2 ). The nature of metal components and amounts of Brönsted acid sites on HZSM-5, and their mesoporosity and intimacy, significantly alter the selectivity for aromatics by tuning BTX distibution and catalyst stability. Although many developments have been achieved regarding the STA process in recent years, no reviews have been published in this flourishing research area over the last two decades. Here, the recent advances and forthcoming challenges in the progress of syngas (CO+H2 ) chemistry and hydrogenation of CO2 toward the value-added aromatic monomers through cascade reactions are highlighted.

中文翻译:

双功能催化剂上级联反应从合成气直接合成增值芳烃的最新进展。

增值的芳香族单体,例如苯,甲苯和二甲苯(BTX),是生产塑料,聚合物,溶剂,农药,染料和粘合剂的重要组成部分化学品。合成气-芳烃(STA)是一种非常有前途的合成芳族单体的方法,可在单个反应器中通过双功能催化剂进行催化,其中由金属成分上的合成气形成的甲醇/二甲醚和/或烯烃中间体被转化为通过级联反应仅在HZSM-5上形成芳族单体。由于铁基催化剂的最佳Fischer-Tropsch合成(FTS)温度非常接近HZSM-5的芳构化温度,因此铁基催化剂已被频繁地使用/改性以从碳氧化物加氢合成芳族单体( CO和CO2)。HZSM-5上金属成分的性质和布朗斯台德酸位的数量,以及它们的介孔性和亲和力,可通过调节BTX的分布和催化剂稳定性来显着改变对芳烃的选择性。尽管近年来在STA流程方面取得了许多进展,但在过去的二十年中,在这个蓬勃发展的研究领域,没有发表任何评论。在此,强调了合成气(CO + H2)化学和通过级联反应将CO2加氢成增值芳烃单体的最新进展和即将面临的挑战。尽管近年来在STA流程方面取得了许多进展,但在过去的二十年中,在这个蓬勃发展的研究领域,没有发表任何评论。在此,强调了合成气(CO + H2)化学和通过级联反应将CO2加氢成增值芳烃单体的最新进展和即将面临的挑战。尽管近年来在STA流程方面取得了许多进展,但在过去的二十年中,在这个蓬勃发展的研究领域,没有发表任何评论。在此,强调了合成气(CO + H2)化学和通过级联反应将CO2加氢成增值芳烃单体的最新进展和即将面临的挑战。
更新日期:2019-02-15
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