The difference of roles of alkaline-earth metal oxides on silica-supported nickel catalysts for CO2 methanation

被引：80
|
作者：
Guo, Meng [1 ,2 ]
Lu, Gongxuan [1 ]
机构：
[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
RSC ADVANCES | 2014年 / 4卷 / 102期
基金：
中国国家自然科学基金;
关键词：
CARBON-DIOXIDE; PRODUCT DISTRIBUTION; NI/SIO2; CATALYST; COMPOSITE OXIDES; ACETIC-ACID; HYDROGENATION; NI; STABILITY; MECHANISM; SELECTIVITY;
D O I：
10.1039/c4ra06202g
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The roles of alkaline-earth metal oxides on CO2 methanation over modified Ni/SiO2 catalysts were investigated. Ni/MO/SiO2 catalysts with variable elements (M = Mg, Ca, Sr and Ba) were prepared by the sequential impregnation method. The results indicated that the presence of SrO promoted the catalytic activity and enhanced the catalyst stability. In addition, BaO addition enhanced the reaction activity, but the Ni/BaO/SiO2 catalyst deactivated significantly after 50 h of time-on-stream due to the sintering of metallic Ni. Moreover, CaO addition affected negligibly the performance of the Ni/CaO/SiO2 catalyst, and MgO addition inhibited significantly the methanation performance because of the low reducibility of Ni species.
引用
收藏
页码：58171 / 58177
页数：7
相关论文
共 50 条
  • [1] Nickel catalysts supported on silica microspheres for CO2 methanation
    Gac, Wojciech
    Zawadzki, Witold
    Slowik, Grzegorz
    Sienkiewicz, Andrzej
    Kierys, Agnieszka
    MICROPOROUS AND MESOPOROUS MATERIALS, 2018, 272 : 79 - 91
  • [2] PROMOTION BY TETRACHLOROMETHANE OF THE OXIDATIVE COUPLING OF METHANE ON SILICA-SUPPORTED ALKALINE-EARTH OXIDES
    AHMED, S
    MOFFAT, JB
    JOURNAL OF CATALYSIS, 1990, 121 (02) : 408 - 421
  • [3] CO2 adsorption and methanation performance of nickel-based catalysts modified with alkali/alkaline-earth metals
    Wang G.
    Guo Y.
    Li J.
    Yao R.
    Sun J.
    Zhao C.
    Huagong Jinzhan/Chemical Industry and Engineering Progress, 2021, 40 (12): : 6925 - 6933
  • [4] Highly Active and Anticoke Fibrous Silica-Supported Nickel Catalyst for CO2 Methanation
    Phuong, Phan Hong
    Do, Ba Long
    Nguyen, Tri
    Nguyen, Duong Thanh Phat
    Anh, Ha Cam
    Loc, Luu Cam
    ACS APPLIED ENERGY MATERIALS, 2024, 7 (14): : 5765 - 5780
  • [5] Effects of alkaline-Earth oxide additives on silica-supported copper catalysts in ethanol dehydrogenation
    Tu, YJ
    Chen, YW
    INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1998, 37 (07) : 2618 - 2622
  • [6] OXIDATIVE COUPLING OF METHANE WITH ALKALINE-EARTH HALIDE CATALYSTS SUPPORTED ON ALKALINE-EARTH OXIDES
    FUJIMOTO, K
    HASHIMOTO, S
    ASAMI, K
    TOMINAGA, H
    CHEMISTRY LETTERS, 1987, (11) : 2157 - 2160
  • [7] Methanation of CO2 over nickel-lanthanide bimetallic oxides supported on silica
    Branco, Joaquim B.
    Brito, Pedro E.
    Ferreira, Ana C.
    CHEMICAL ENGINEERING JOURNAL, 2020, 380
  • [8] Carbon formation and CO methanation on silica-supported nickel and nickel-copper catalysts in CO+H-2 mixtures
    Tavares, MT
    Alstrup, I
    Bernardo, CA
    RostrupNielsen, JR
    JOURNAL OF CATALYSIS, 1996, 158 (02) : 402 - 410
  • [9] Carbon Formation and CO Methanation on Silica-Supported Nickel and Nickel-Copper Catalysts in CO + H2 Mixtures
    J Catal, 2 (402):
  • [10] ROLE OF CARBON-TETRACHLORIDE IN THE CONVERSION OF METHANE ON SILICA-SUPPORTED ALKALI-METAL ADDED ALKALINE-EARTH OXIDE CATALYSTS
    AHMED, S
    MOFFAT, JB
    APPLIED CATALYSIS, 1990, 58 (01): : 83 - 103
12345