Syngas Production from CO2 Reforming and CO2-steam Reforming of Methane over Ni/Ce-SBA-15 Catalyst

29th Symposium of Malaysian Chemical Engineers 2016

Tan, J.S.^1 ; Danh, H.T.^2 ; Singh, S.^1 ; Truong, Q.D.^3 ; Setiabudi, H.D.^1 ; Vo, D.-V.N.^1,4

Faculty of Chemical and Natural Resources Engineering, University Malaysia Pahang, Lebuhraya Tun Razak, Pahang, Gambang

26300, Malaysia^1

Clean Energy and Chemical Engineering, Korea University of Science and Technology (UST), Daejeon

305-350, Korea, Republic of^2

Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Aoba-Ku, Sendai

980-8577, Japan^3

Centre of Excellence for Advanced Research in Fluid Flow, Universiti Malaysia Pahang, Pahang, Gambang, Kuantan

26300, Malaysia^4

关键词: Catalytic performance;    Catalytic reactivity;    Crystallite dimension;    Gas hourly space velocities;    Metal-support interactions;    Reduction temperatures;    Reverse water gas shift;    Tubular fixed bed reactors;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/206/1/012017/pdf
DOI  :  10.1088/1757-899X/206/1/012017

来源: IOP

【 摘 要 】

This study compares the catalytic performance of mesoporous 10 Ni/Ce-SBA-15 catalyst for CO2reforming and CO2-steam reforming of methane reactions in syngas production. The catalytic performance of 10 Ni/Ce-SBA-15 catalyst for CO2reforming and CO2-steam reforming of methane was evaluated in a temperature-controlled tubular fixed-bed reactor at stoichiometric feed composition, 1023 K and atmospheric pressure for 12 h on-stream with gas hourly space velocity (GHSV) of 36 L gcat-1h-1. The 10 Ni/Ce-SBA-15 catalyst possessed a high specific BET surface area and average pore volume of 595.04 m2g-1. The XRD measurement revealed the presence of NiO phase with crystallite dimension of about 13.60 nm whilst H2-TPR result indicates that NiO phase was completely reduced to metallic Ni0phase at temperature beyond 800 K and the reduction temperature relied on different degrees of metal-support interaction associated with the location and size of NiO particles. The catalytic reactivity was significantly enhanced with increasing H2O/CO2feed ratio. Interestingly, the H2/CO ratio for CO2-steam reforming of methane varied between 1 and 3 indicated the occurrence of parallel reactions, i.e., CH4steam reforming giving a H2/CO of 3 whilst reverse water-gas shift (RWGS) reaction consuming H2to produce CO gaseous product.