Coupling of Propane with CO2 to Propylene Catalyzed by V–Fe Modified KIT-6 Zeolites

IF 2.1 4区 化学 Q3 CHEMISTRY, PHYSICAL Catalysis Surveys from Asia Pub Date : 2021-06-08 DOI:10.1007/s10563-021-09339-3
Ruiqiang Liu, Fei Zha, Haifeng Tian, Xiaohua Tang, Yue Chang, Xiaojun Guo
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引用次数: 1

Abstract

Propane dehydrogenation to propene is an endothermic reaction and CO2 hydrogenation to light olefins is an exothermic reaction. Using the CO2 hydrogenation reaction to consume the hydrogen from the propane dehydrogenation reaction, which is more favorable to propylene formation. A new method for coupling propane and CO2 to propylene is presented. The V–Fe modified KIT-6 was prepared by the ultrasonic-assisted impregnation method and used for coupling reaction of propane with CO2 to propylene. Exploring the relationship between catalytic properties and physicochemical characteristics through several characterization methods. As the appropriate amounts of V and Fe species were introduced into the framework of KIT-6, V–Fe modified KIT-6 performed large specific surface area, a highly ordered mesoporous structure and highly dispersed V and Fe active sites. The catalysis performance of V–Fe modified KIT-6 zeolites for production of propylene by propane dehydrogenation, CO2 hydrogenation and coupling reaction of C3H8 with CO2 was compared. Under the conditions of C3H8/CO2/N2 = 1:4:5, total flow rate = 20 mL/min, the temperature at 580 °C, the reaction pressure at 0.1 MPa, V/Fe molar ratio = 2 and the catalyst mass of 0.2 g, the propane conversion, propylene selectivity and yield are 37.8%, 87.0% and 32.9%, respectively.

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V-Fe改性KIT-6沸石催化丙烷与CO2偶联制丙烯的研究
丙烷脱氢制丙烯为吸热反应,CO2加氢制轻烯烃为放热反应。利用CO2加氢反应来消耗丙烷脱氢反应产生的氢,更有利于丙烯的生成。提出了一种丙烷与二氧化碳偶联制丙烯的新方法。采用超声辅助浸渍法制备了V-Fe改性KIT-6,并将其用于丙烷与CO2的偶联反应制丙烯。通过几种表征方法探索催化性能与理化特性之间的关系。在KIT-6的框架中加入适量的V和Fe, V - Fe修饰的KIT-6具有较大的比表面积、高度有序的介孔结构和高度分散的V和Fe活性位点。比较了V-Fe改性KIT-6分子筛对丙烷脱氢、CO2加氢及C3H8与CO2偶联反应制丙烯的催化性能。在C3H8/CO2/N2 = 1:4:5、总流量为20 mL/min、反应温度为580℃、反应压力为0.1 MPa、V/Fe摩尔比为2、催化剂质量为0.2 g的条件下,丙烷转化率、丙烯选择性和产率分别为37.8%、87.0%和32.9%。图形抽象
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来源期刊
Catalysis Surveys from Asia
Catalysis Surveys from Asia 化学-物理化学
CiteScore
4.80
自引率
0.00%
发文量
29
审稿时长
>12 weeks
期刊介绍: Early dissemination of important findings from Asia which may lead to new concepts in catalyst design is the main aim of this journal. Rapid, invited, short reviews and perspectives from academia and industry will constitute the major part of Catalysis Surveys from Asia . Surveys of recent progress and activities in catalytic science and technology and related areas in Asia will be covered regularly as well. We would appreciate critical comments from colleagues throughout the world about articles in Catalysis Surveys from Asia . If requested and thought appropriate, the comments will be included in the journal. We will be very happy if this journal stimulates global communication between scientists and engineers in the world of catalysis.
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