Steam reforming of toluene over Ni-Co/modified-activated carbon catalyst for hydrogen production: Thermodynamic and experimental analysis

被引：11
作者：
Yahya, Hamdya Sabrina Mohidin [1 ]
Abbas, Tariq [1 ]
Alias, Hajar [1 ]
Amin, Nor Aishah Saidina [1 ]
机构：
[1] Univ Teknol Malaysia UTM, Fac Chem & Energy Engn, Chem React Engn Grp CREG, Johor Baharu 81310, Malaysia
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2024年 / 50卷
关键词：
Thermodynamic analysis; Hydrogen; Activated carbon; Nickel-cobalt; Steam reforming of toluene; Gibbs free energy minimization; BIOMASS TAR MODEL; NICKEL; GASIFICATION; PERFORMANCE; POROSITY; SUPPORT; COKE;
D O I：
10.1016/j.ijhydene.2023.10.008
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
An integrated thermodynamic and experimental analysis of steam reforming of toluene (SRT) over Ni-Co/modified-palm kernel shell activated carbon (AC) catalysts for H-2 production has been investigated. The catalyst samples, synthesized with different AC support modifications methods (i.e., HNO3 reflux and H2O2 aging) and impregnation, are characterized by BET, TGA, FESEM-EDX, TEM, XRD, H-2-chemisorption and TPO spectroscopies. Aspen Plus (R) simulation software is employed to perform the thermodynamic analysis to investigate the effect of wide range of operating parameters such as temperature (373-1473 K), pressure (1-30 atm) and steam-to-carbon (S/C) molar ratio (1-9) on product distribution using Gibbs free energy minimization. Optimum conditions of SRT with 86.4% H-2 yield and complete toluene conversion are attained at 973 K, S/C ratio of 5 and atmospheric pressure. Next, the catalytic performance of Ni-Co/modified-AC for enhancing SRT to H-2 is conducted in a fixed-bed reactor at selected conditions. It is revealed that Ni-Co/ACP catalyst confers 82.0% and 91.7% of H-2 yield and toluene conversion, respectively. The results of thermodynamic simulation and experimental testing strongly corroborate the role of Ni-Co/ACP as a high-performance catalyst to enhance catalytic conversion of SRT.
引用
收藏
页码：561 / 577
页数：17
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