Effect of SiO2/Al2O3 Ratio on Micro-Mesopore Formation for Pt/Beta-MCM-41 via NaOH Treatment and the Catalytic Performance in N-heptane Hydro isomerization

2017 3rd International Conference on Environmental Science and Material Application

生态环境科学;材料科学

Gao, Li^1,2 ; Shi, Zhiyuan^3 ; Liu, Yingming^4 ; Zhao, Yuanshou^5 ; Liu, Qinghua^6 ; Xu, Chengguo^3 ; Bai, Peng^1 ; Yan, Zifeng^1

State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum, Qingdao

266580, China^1

Department of Petrochemical Engineering, Karamay Vocational and Technical College, Xinjiang

833600, China^2

Ethylene Plant, Dushanzi Petrochemical Company, China University of Petroleum, Xinjiang

833600, China^3

XinJiang TianLi Industry and Commerce Corporatation, Xinjiang

833699, China^4

Beijing Global Safety Technology Co., Ltd, Beijing

100094, China^5

XinJiang HuanQiu Contracting and Engineering Company, Xinjiang

833600, China^6

关键词: Catalytic performance;    Chemical compositions;    Hydro-isomerization;    Hydrothermally synthesized;    Mesopore formation;    Mesoporous composites;    Nitrogen adsorption;    Textural properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/108/4/042105/pdf
DOI  :  10.1088/1755-1315/108/4/042105

来源: IOP

【 摘 要 】

Micro-mesoporous composite material Beta-MCM-41(BM) were hydrothermally synthesized by treating parent beta with molar SiO2/Al2O3ratios of 12.5, 20 and 30 as precursors. The influence of SiO2/Al2O3ratio of zeolite beta on effective micro-mesoporous composite formation was studied by investigating the crystallinity, morphology, chemical composition, acidity and textural property of Beta-MCM-41 through XRD, nitrogen adsorption, SEM, TEM, NH3-TPD, FTIR and Pyridine-FTIR. The catalytic performance was evaluated in terms of n-heptane hydro isomerization. The results demonstrated that Beta-MCM-41 supported Pt catalysts showed higher selectivity to isoheptanes than Pt/Beta. It was attributed to the superiorities of the pore structure and mesoporous accelerated the diffusion of larger molecules of isoheptanes.