Photocatalytic conversion of CO2 and CH4 over immobilized titania nanoparticles coated on mesh: Optimization and kinetic study

被引:58
作者
Delavari, Saeed [1 ]
Amin, Nor Aishah Saidina [1 ]
机构
[1] Univ Teknol Malaysia, Fac Chem Engn, Chem React Engn Grp CREG, Low Carbon Energy Grp, Skudai 81310, Johor, Malaysia
关键词
Photoreduction; Semiconductor; Nanoparticles; Titania; Optimization; Response Surface Methodology; CARBON-DIOXIDE; TIO2; NANOPARTICLES; REDUCTION; PHOTOREDUCTION; CAPTURE; METHANE; GAS; DEGRADATION; HYDROGEN; PRODUCTS;
D O I
10.1016/j.apenergy.2015.03.125
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The study on immobilized titania (TiO2) nanoparticles semiconductor on stainless steel mesh for photocatalytic conversion of CO2 and CH4 has been investigated. Properties of commercial and calcinated photocatalysts on mesh surface were characterized using UV-vis spectra, BET, FESEM and XRD. The photoreduction products were identified with FTIR and GC. The process conditions was optimized using experimental design and process optimization tools to determine the maximum desired response via Response Surface Methodology (RSM) in conjunction with central composite rotatable design (CCRD). The experimental parameters were stainless steel mesh size, amount of titania nanoparticles, calcination temperature, UV light power and initial ratios of CO2:CH4:N-2 in feed. Calcination of coated titania nanoparticles increased the absorption of UV-vis light while uniform photocatalyst structure commensurate with decreasing agglomeration. The optimal conditions for maximum CO2 conversion of 37.9% were determined as stainless steel mesh size of 140, coated titania nanoparticles on mesh of 4 g, calcination temperature of 600 degrees C, UV light power of 250 W and 10% of CO2 in feed. Correspondingly, the selectivity of products were 4.7%, 43%, 3.9%, 41.4% and 45.7% for ethane, acetic acid, formic acid, methyl acetate and methyl formate, respectively. The kinetic model, based on Langmuir-Hinshelwood, incorporated photocatalytic adsorptive reduction and oxidation reactions over the catalyst surface, and fitted-well with the experimental data. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1171 / 1185
页数:15
相关论文
共 52 条
  • [1] Photocatalytic conversion of carbon dioxide into methanol using zinc-copper-M(III) (M = aluminum, gallium) layered double hydroxides
    Ahmed, Naveed
    Shibata, Yoshiyuki
    Taniguchi, Tatsuo
    Izumi, Yasuo
    [J]. JOURNAL OF CATALYSIS, 2011, 279 (01) : 123 - 135
  • [2] [Anonymous], 2005, RESPONSE SURFACE MET
  • [3] Application of response surface methodology and central composite rotatable design for modeling and optimization of a multi-gravity separator for chromite concentration
    Aslan, N.
    [J]. POWDER TECHNOLOGY, 2008, 185 (01) : 80 - 86
  • [4] Immobilisation of TiO2 powder for the treatment of polluted water
    Byrne, JA
    Eggins, BR
    Brown, NMD
    McKinney, B
    Rouse, M
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 1998, 17 (1-2) : 25 - 36
  • [5] Reaction engineering of suspended solid heterogeneous photocatalytic reactors
    Cassano, AE
    Alfano, OM
    [J]. CATALYSIS TODAY, 2000, 58 (2-3) : 167 - 197
  • [6] Photoreduction of CO2 by TiO2 nanocomposites synthesized through reactive direct current magnetron sputter deposition
    Chen, Le
    Graham, Michael E.
    Li, Gonghu
    Gentner, Drew R.
    Dimitrijevic, Nada M.
    Gray, Kimberly A.
    [J]. THIN SOLID FILMS, 2009, 517 (19) : 5641 - 5645
  • [7] Chemical-photo-electricity diagrams by Ohm's law - A case study of Ni-doped TiO2 solutions in dye-sensitized solar cells
    Chou, Chuen-Shii
    Huang, Yan-Hao
    Wu, Ping
    Kuo, Yi-Ting
    [J]. APPLIED ENERGY, 2014, 118 : 12 - 21
  • [8] Fighting global warming: The potential of photocatalysis against CO2, CH4, N2O, CFCs, tropospheric O3, BC and other major contributors to climate change
    de Richter, Renaud
    Caillol, Sylvain
    [J]. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS, 2011, 12 (01) : 1 - 19
  • [9] Chemical reduction of CO2 to different products during photo catalytic reaction on TiO2 under diverse conditions:: an overview
    Dey, G. R.
    [J]. JOURNAL OF NATURAL GAS CHEMISTRY, 2007, 16 (03): : 217 - 226
  • [10] Evaluation of Australian companies' scope 3 greenhouse gas emissions assessments
    Downie, John
    Stubbs, Wendy
    [J]. JOURNAL OF CLEANER PRODUCTION, 2013, 56 : 156 - 163