Highly efficient synthesis of dimethyl ether directly from biomass-derived gas over Li-modified Cu-ZnO-Al2O3/HZSM-5 hybrid catalyst

Hongmei Zuo, Dongsen Mao, Xiaoming Guo and Jun Yu

Renewable Energy, 2018, vol. 116, issue PA, 38-47

Abstract: A series of CuO-ZnO-Al2O3-Li2O catalysts with various Al2O3/Li2O mass ratios were prepared by co-precipitation method and characterized by several techniques such as XRD, N2 adsorption, SEM/EDX, reactive N2O adsorption, XPS/XAES, H2-TPR, H2-TPD, and CO-TPD. The results revealed that the specific surface area (SBET), dispersity of Cu species, metallic Cu surface area (SCu) and adsorption capacity for reactants (H2 and CO) were increased by the addition of suitable amount of Li2O to the CuO-ZnO-Al2O3 catalyst, thus enhancing the catalytic activity of the hybrid catalyst composed of CuO-ZnO-Al2O3 and HZSM-5 for the direct synthesis of dimethyl ether from biomass-derived gas. Furthermore, the addition of Li2O significantly improved the stability of CuO-ZnO-Al2O3 catalyst due to the effective inhibition of the crystallization of Cu and ZnO.

Keywords: CuO-ZnO-Al2O3-Li2O; Zeolite HZSM-5; Hybrid catalyst; Dimethyl ether; Biomass-derived gas (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:116:y:2018:i:pa:p:38-47

DOI: 10.1016/j.renene.2017.09.041

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