合成气直接转化制C_(2+)含氧化合物中接力催化路径设计的研究进展  

Research progress in relay catalysis path design for syngas direct conversion to C_(2+) oxygenates

作　　者：郭淑静 王军峰[1] 张伟[1] 陈佑涛 葛元征 张磊[1] GUO Shujing;WANG Junfeng;ZHANG Wei;CHEN Youtao;GE Yuanzheng;ZHANG Lei(Shaanxi Yanchang Petroleum(Group)Co.,Ltd.&Dalian Institute of Chemical Physics Xi’an Clean Energy(Chemical Industry)Research Institute,Xi’an 710075,Shaanxi,China)

机构地区：[1]陕西延长石油(集团)有限责任公司大连化物所西安洁净能源(化工)研究院,陕西西安710075

出　　处：《天然气化工—C1化学与化工》2022年第4期41-47,共7页Natural Gas Chemical Industry

基　　金：陕西延长石油(集团)有限责任公司基础研究专项课题(ycsy2020jcyj-A-01)。

摘　　要：合成气直接转化制C_(2+)含氧化合物(乙醇、乙酸甲酯和多碳醇等)不仅是碳基原料经合成气向化学品转化的关键步骤,也是有效降低醇类等化学品石油依存度的重要途径。在传统费托合成催化剂上,C_(2+)含氧化合物服从Anderson-Schulz-Flory(ASF)分布,目标产物选择性偏低。近年来,利用接力催化路径催化合成气高选择性制C_(2+)含氧化合物在多个催化剂体系中取得了成功。概述了接力催化路径设计及其合成气直接转化制C_(2+)含氧化合物的研究进展,总结了关键设计策略和典型案例,讨论了影响催化性能的关键因素,如催化剂混合方式(活性位点的空间距离)和原料气n(H2)/n(CO)等。分析认为,接力催化能够打破合成气转化的ASF分布,大幅提高目标产物C_(2+)含氧化合物的选择性。本工作可为开发高活性、高选择性和高稳定性合成气转化催化剂提供思路和启发。The direct catalytic conversion of syngas into C_(2+)oxygenates is both a key step for the transformation of carbon-based resources to high value chemicals,and an important way to alleviate the dependence on petroleum resources effectively.The C_(2+)oxygenates follow the Anderson-Schulz-Flory(ASF)distribution on traditional Fischer-Tropsch(F-T)catalysts,which has low selectivity towards target products.Recently,the relay catalysis strategy has been successfully applied to direct conversion of syngas to C_(2+)oxygenates over several multifunctional relay catalysts systems.Recent developments in relay catalysis path design for syngas direct conversion to C_(2+)oxygenates were reviewed,several key design strategies and typical cases were summarized,and key factors affecting the catalysts properties such as catalysts packing mode(the proximity between the two catalytic sites)and n(H2)/n(CO)ratio etc.were discussed.It is concluded that relay catalysis can break ASF distribution on syngas conversion and improve target products(C_(2+)oxygenates)selectivity greatly.This work can provide ideas and inspiration for the development of catalysts with higher selectivity,activity and stability for syngas conversion reactions.

关 键 词：合成气 接力催化 多功能催化剂 C_(2+)含氧化合物 

分 类 号：TQ032[化学工程] O643.36[理学—物理化学]