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典型文献
Process monitoring of the Au-S bond conversion in acetylene hydrochlorination
文献摘要:
The continuous expansion of vinyl chloride production increases environmental pollution caused by mer-cury catalysts,which is an issue that urgently needs to be solved.Green and stable catalysts should be researched to alleviate this issue.In this research,Thiolactic acid acts as a ligand where sulfhydryl groups form a stable complex with Au on the surface of a spherical activated carbon(SAC).An Au-thiolactic acid/SAC catalyst was designed with a Au theoretical loading of 0.5%(mass)to overcome the disadvantages of traditional Au-based catalysts,such as a low conversion rate and poor life cycle.The ratio of Au to ligand was screened,and the activity was best when Au/S=1∶8.The formation of the Au-S bond was proven by FT-IR and UV-vis.The longevity test of the Au1S8/SAC catalyst was carried out at 1200 h1 for 50 h.Samples with reaction times of 0 h,5 h,10 h,20 h,and 50 h were taken to monitor the catalyst status.The XPS and TPR tests proved that the Au-S bond broke as the acetylene hydrochlorination reaction pro-ceeded.The DFT calculation proved that the Au-S bond is the active site,and the sulfur atom promotes the adsorption of C2H2 by the catalyst.
文献关键词:
作者姓名:
Lutai Song;Li Liu;Mingyuan Zhu;Bin Dai
作者机构:
School of Chemistry and Chemical Engineering,Shihezi University,Shihezi 832000,China;Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan,Shihezi 832000,China
引用格式:
[1]Lutai Song;Li Liu;Mingyuan Zhu;Bin Dai-.Process monitoring of the Au-S bond conversion in acetylene hydrochlorination)[J].中国化学工程学报(英文版),2022(05):32-40
A类:
hydrochlorination,Thiolactic,thiolactic,Au1S8
B类:
Process,monitoring,bond,conversion,acetylene,continuous,expansion,vinyl,chloride,production,increases,environmental,pollution,caused,by,mer,cury,catalysts,which,issue,that,urgently,needs,solved,Green,stable,should,researched,alleviate,this,In,acid,acts,ligand,where,sulfhydryl,groups,complex,surface,spherical,activated,carbon,SAC,An,was,designed,theoretical,loading,mass,overcome,disadvantages,traditional,such,low,rate,poor,life,cycle,ratio,screened,activity,best,when,formation,proven,UV,vis,longevity,carried,out,h1,Samples,reaction,times,were,taken,status,XPS,TPR,tests,proved,broke,ceeded,DFT,calculation,active,site,sulfur,atom,promotes,adsorption,C2H2
AB值:
0.531025
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