Synthesis and catalytic performance of bimetallic NiMo-and NiW-ZSM-5/MCM-41 composites for production of liquid biofuels

查看全文 作　　者：Maliwan [1]Subsadsana;Pitsanuphong Kham-[1]or;Pakpoom [1]Sangdara;Pirom [1]Suwannasom;Chalerm [1]Ruangviriyachai

机构地区：[1]Materials Chemistry Research Center and Center of Excellence for Innovation in Chemistry,Department of Chemistry,Faculty of Science,Khon Kaen University

出　　处：《燃料化学学报》索引2017年第45卷第7期,共12页

基　　金：The financial supported by Nakhon Ratchasima Rajabhat University,Nakhon Ratchasima;the National Research Council of Thailand;Center of Excellence for Innovation in Chemistry (PERCH-CIC);Office of the Higher Education Commission;Ministry of Education and Materials Chemistry Research Center;Department of Chemistry Faculty of Science,Khon Kaen University,Thailand 摘　　要：This work presents a synthesis of bimetallic NiMo and NiW modified ZSM-5/MCM-41 composites and their heterogeneous catalytic conversion of crude palm oil( CPO) to biofuels. The ZSM-5/MCM-41 composites were synthesized through a self-assembly of cetyltrimethylammonium bromide( CTAB) surfactant with silica-alumina from ZSM-5 zeolite,prepared from natural kaolin by the hydrothermal technique. Subsequently,the synthesized composites were deposited with bimetallic NiMo and NiW by impregnation method. The obtained catalysts presented a micro-mesoporous structure,confirmed by XRD,SEM,TEM,EDX,NH_3-TPD,XRF and N_2 adsorption-desorption measurements. The results of CPO conversion demonstrate that the catalytic activity of the synthesized catalysts decreases in the series of NiMo-ZSM-5/MCM-41 > NiW-ZSM-5/MCM-41 > Ni-ZSM-5/MCM-41 > Mo-ZSM-5/MCM-41 > W-ZSM-5/MCM-41 > NiMo-ZSM-5 > NiW-ZSM-5 > ZSM-5/MCM-41 > ZSM-5 > MCM-41. It was found that the bimetallic NiMo-and NiW-ZSM-5/MCM-41 catalysts give higher yields of liquid hydrocarbons than other catalysts at a given conversion. Types of hydrocarbon in liquid products,identified by simulated distillation gas chromatography-flame ionization detector( SimDis GC-FID),are gasoline( 150-200 ℃; C5-12),kerosene( 250-300 ℃; C5-20) and diesel( 350 ℃; C7-20).Moreover,the conversion of CPO to biofuel products using the NiMo-and NiW-ZSM-5/MCM-41 catalysts offers no statistically significant difference( P> 0.05) at 95% confidence level,evaluated by SPSS analysis. 关键词：self-assembly of surfactant ZSM-5/MCM-41 composite micro-mesoporous structure HYDROCRACKING process LIQUID biofuels

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Synthesis and catalytic performance of bimetallic NiMo-and NiW-ZSM-5/MCM-41 composites for production of liquid biofuels

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