Catalytic performance of methanol decomposition on Cu/SiO<sub>2</sub> catalyst with different silica sources prepared with ammonia evaporation method

DU Ze-yu; ZHU Ming; BAO Zhe-yu; SHI Da-you; CHEN Xiao-rong; XU Yan; MEI Hua

Volume 46 Issue 6

Jun. 2018

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Article Navigation > Journal of Fuel Chemistry and Technology > 2018 > 46(6): 692-699

DU Ze-yu, ZHU Ming, BAO Zhe-yu, SHI Da-you, CHEN Xiao-rong, XU Yan, MEI Hua. Catalytic performance of methanol decomposition on Cu/SiO2 catalyst with different silica sources prepared with ammonia evaporation method[J]. Journal of Fuel Chemistry and Technology, 2018, 46(6): 692-699.

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DU Ze-yu, ZHU Ming, BAO Zhe-yu, SHI Da-you, CHEN Xiao-rong, XU Yan, MEI Hua. Catalytic performance of methanol decomposition on Cu/SiO₂ catalyst with different silica sources prepared with ammonia evaporation method[J]. Journal of Fuel Chemistry and Technology, 2018, 46(6): 692-699.

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Catalytic performance of methanol decomposition on Cu/SiO₂ catalyst with different silica sources prepared with ammonia evaporation method

DU Ze-yu¹,
ZHU Ming^{1, 2
,
,},
BAO Zhe-yu¹,
SHI Da-you¹,
CHEN Xiao-rong¹,
XU Yan¹,
MEI Hua^{1, 2}

1.
College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China
2.
Catalytic Hydrogenation Engineering Technology Research Center, Nuomeng Chem, Nanjing 210009, China

More Information

Corresponding author: ZHU Ming, Tel: 18205182971, E-mail: mingzhu84@njtech.edu.cn
Received Date: 2018-01-26
Rev Recd Date: 2018-04-20

Available Online: 2021-01-23

Publish Date: 2018-06-10

Abstract

Abstract

Cu/SiO₂ catalysts were prepared via ammonia evaporation method, using fumed silica (SiO₂-aer), silica gel (SiO₂-gel) and alkaline silica sol (SiO₂-sol) as the silica sources and their catalytic performance in methanol decomposition were investigated. The catalysts were characterized by N₂ adsorption-desorption, N₂O chemisorption, inductively coupled plasma atomic emission spectroscopy (ICP-AES), X-ray diffraction (XRD), H₂ temperature programmed reduction (H₂-TPR), transmission electron microscope (TEM) and X-ray photoelectron spectroscopy(XPS). The results indicate that silica source can affect the decomposition activity of Cu/SiO₂ catalysts. The Cu/SiO₂-sol catalyst prepared with alkaline silica sol exhibits larger surface area, smaller active site size and more uniform dispersion of Cu. Therefore, it gives Cu/SiO₂-sol a better decomposition performance than other catalysts. Methanol conversion on Cu/SiO₂-sol is 10% higher than that on Cu/SiO₂-aer, and 7% higher than that on Cu/SiO₂-gel. Additionally, byproducts concentration on Cu/SiO₂-sol is considerably lower than other catalysts. Under the reaction conditions of 280 ℃, 1 MPa and 0.6 h^-1 of WHSV, methanol conversion of 98.4% and gas yield of 96.7% can be achieved.
- methanol decomposition,
- ammonia evaporation method,
- Cu/SiO₂ catalyst

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References(29)

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