Catalytic features of Mg modified Ni/SiO2/silica cloth systems in the decomposition of methane for making "COx-free" H2

被引：14
作者：
Italiano, G. [1 ]
Espro, C. [1 ]
Arena, F. [1 ,2 ]
Frusteri, F. [2 ]
Parmaliana, A. [1 ]
机构：
[1] Univ Messina, Dipartimento Chim Ind & Ingn Mat, I-98166 Messina, Italy
[2] Ist CNR ITAE Nicola Giordano, I-98126 Messina, Italy
来源：
CATALYSIS LETTERS | 2008年 / 124卷 / 1-2期
关键词：
methane decomposition; CO(x)-free" hydrogen; thin layer catalysts; multilayer reactor; silica cloths;
D O I：
10.1007/s10562-008-9527-0
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：
The influence of the Mg addition on the catalytic performance of a 20% Ni based SiO(2)/silica cloth system in the decomposition of methane for making "CO(x)-free" H(2) in the T(R) range 773-873 K has been evaluated. As the Mg(at)/Ni(at) ratio increases from 0.10 to 2.20 the incipient Ni-Mg-O interaction becomes stronger until the formation of Ni(x) Mg((1-x))O solid solution. The presence of Mg(2+) ions allows a higher carbon capacity (C/Ni, number of CH(4) molecules converted per Ni atom until complete catalyst deactivation) and consequently a higher H(2) productivity of the Ni based systems which results in a smoothing effect of the unavoidable declining activity trend even if it does not affect the tip growth coking mechanism.
引用
收藏
页码：7 / 12
页数：6
相关论文
共 31 条
[11]   Thermo Catalytic decomposition of methane on Ni/SiO2 catalyst into pure hydrogen and carbon nanotubes [J].
Saraswat, Sushil Kumar ;
Pant, K. K. .
CLEAN TECHNOLOGY 2011: BIOENERGY, RENEWABLES, STORAGE, GRID, WASTE AND SUSTAINABILITY, 2011, :387-390
[12]   Thermo Catalytic decomposition of methane on Ni/SiO2 catalyst into pure hydrogen and carbon nanotubes [J].
Saraswat, Sushil Kumar ;
Pant, K. K. .
NANOTECHNOLOGY 2011: BIO SENSORS, INSTRUMENTS, MEDICAL, ENVIRONMENT AND ENERGY, NSTI-NANOTECH 2011, VOL 3, 2011, :628-631
[13]   Thermal catalytic decomposition of methane over unreduced Ni/SiO2 and Ni/Al2O3 catalysts [J].
Calafat, Alvaro ;
Aldana, Jose ;
Sanchez, Nora .
REVISTA TECNICA DE LA FACULTAD DE INGENIERIA UNIVERSIDAD DEL ZULIA, 2012, 35 (02) :162-169
[14]   Effect of La, Ce and Nd oxides addition on the activity and stability of Co/MgO catalyst for methane decomposition into COx-free H2 production and carbon nanotubes [J].
Awadallah, Ahmed E. ;
El-Desouki, Doaa S. ;
Abdel-Azim, Samira M. ;
Aboul-Gheit, Noha A. K. ;
Abdel-Hamid, Sohair M. ;
Aboul-Gheit, Ahmed K. .
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES, 2018, 26 (09) :525-534
[15]   Evaluation of highly active and stable SiO2 supported Fe-based catalysts for the catalytic methane decomposition into COx free hydrogen and CNTs [J].
Mohamed, Assem T. ;
Ali, Sardar ;
Kumar, Anand ;
Mondal, Kartick C. ;
El-Naas, Muftah H. .
CATALYSIS COMMUNICATIONS, 2023, 180
[16]   Evidence of composition deviation of metal particles of a Ni-Cu/Al2O3 catalyst during methane decomposition to COx-free hydrogen [J].
Li, Douxing ;
Chen, Jiuling ;
Li, Yongdan .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2009, 34 (01) :299-307
[17]   Thermocatalytic decomposition of methane to COx-free hydrogen and carbon over Ni-Fe-Cu/Al2O3 catalysts [J].
Bayat, Nima ;
Meshkani, Fereshteh ;
Rezaei, Mehran .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2016, 41 (30) :13039-13049
[18]   Methane decomposition over Ni-Fe/Al2O3 catalysts for production of COx-free hydrogen and carbon nanofiber [J].
Bayat, Nima ;
Rezaei, Mehran ;
Meshkani, Fereshteh .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2016, 41 (03) :1574-1584
[19]   Effect of the nickel precursor on deactivation of Ni/SiO2 catalysts during thermal catalytic decomposition of methane at 823 K [J].
Aldana, Jose ;
Calafat, Alvaro ;
Sanchez, Nora .
REVISTA TECNICA DE LA FACULTAD DE INGENIERIA UNIVERSIDAD DEL ZULIA, 2012, 35 (01) :3-10
[20]   Impact of Cr doping on the performance of Ni/ Al2O3 catalyst through methane decomposition into COx-free hydrogen and carbon nanomaterials [J].
Awadallah, Ahmed E. ;
Aboul-Enein, Ateyya A. ;
Deyab, Mohamed A. ;
Azab, Mostafa A. ;
Haggar, Ahmed M. .
CHEMICAL ENGINEERING RESEARCH & DESIGN, 2022, 186 :701-712
1234