合成气绿色合成乙酸研究进展  

Research progress in green synthesis of acetic acid from syngas

作　　者：郭淑静 陈佑涛 刘星 张伟[1] 张磊[1] 朱海林 GUO Shujing;CHEN Youtao;LIU Xing;ZHANG Wei;ZHANG Lei;ZHU Hailin(Shaanxi Yanchang Petroleum(Group)Company Limited&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：《低碳化学与化工》2023年第5期22-28,共7页Low-Carbon Chemistry and Chemical Engineering

基　　金：国家自然科学基金(22272167);陕西省重点研发计划(2023-YBGY-285)。

摘　　要：相比于传统甲醇液相羰基化路线,合成气绿色合成乙酸具有环境友好、成本低等优势,具有广阔的发展前景。综述了合成气绿色合成乙酸路线和催化剂研究进展,阐述了催化剂设计优化策略,重点讨论了分子筛酸性和扩散性等性质对反应性能的影响规律。然后归纳了体系中H_(2)O含量、原料气n(H_(2))/n(CO)、活性组分接触距离、反应温度和反应压力等关键条件对反应性能的影响规律。总结认为,合成气绿色合成乙酸的关键过程为丝光沸石(MOR)分子筛催化甲醇羰基化制乙酸,调控增加MOR八元环酸性位数量和减小MOR颗粒尺寸以提高乙酸时空收率和催化剂稳定性是该过程研究的重点。本研究可为开发选择性高、应用条件温和和催化剂廉价易得的合成气绿色合成乙酸工艺提供一定参考。Compared with the traditional methanol carbonylation to acetic acid in liquid phase,the green synthesis of acetic acid from syngas has the advantages of environmental friendeness and low cost,which have broad development prospects.The routes and catalysts research progress in green synthesis of acetic acid from syngas were reviewed.The design and optimization strategies of catalysts were expounded,and the influences of the properties of molecular sieve such as acidity and diffusibility on the reaction performance were discussed.Then,the influences of key conditions such as H_(2)O content,n(H_(2))/n(CO)of feed gas,contact distance of active components,reaction temperature,and reaction pressure on reaction performance in the system were summarized.It is concluded that the key process for the green synthesis of acetic acid from syngas is the methanol carbonylation to acetic acid catalyzed by mordenite(MOR)molecular sieve.Increasing the number of acidic sites of MOR eight-membered ring and reducing the particle size of MOR to improve the spatiotemporal yield of acetic acid and the stability of catalyst are the key points of this process.This study provides some reference for the development of green synthesis of acetic acid from syngas with high selectivity,mild application conditions and cheap and easy available catalysts.

关 键 词：合成气 乙酸 甲醇 绿色合成 羰基化 

分 类 号：TQ032[化学工程] O643.36[理学—物理化学]