Preparation of MgO/SBA-15 Catalyst and Its Catalytic Performance for the Synthesis of 1,3-Butadiene from Ethanol

doi:10.11944/j.issn.1000-0518.2019.02.180157

Chinese Journal of Applied Chemistry ›› 2019, Vol. 36 ›› Issue (2): 176-181.DOI: 10.11944/j.issn.1000-0518.2019.02.180157

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Preparation of MgO/SBA-15 Catalyst and Its Catalytic Performance for the Synthesis of 1,3-Butadiene from Ethanol

LIU Zongzhang,ZHANG Tong,XU Yuchao,JIANG　Haoxi,ZHANG　Minhua()

^aKey Laboratory for Green Chemical Technology of Ministry of Education,R&D Center for Petrochemical Technology;^bCollaborative Innovation Center of Chemical Science and Engineering,Tianjin University,Tianjin 300072,China

Received:2018-05-07 Published:2019-02-01 Online:2019-01-31
Contact: ZHANG　Minhua

Abstract

Abstract:

The novel MgO/SBA-15 catalysts were prepared via impregnation of magnesium oxide onto the SBA-15 zeolite support. The effect of MgO content on the structure, physic-chemical properties and catalytic performances of catalysts was studied by Brunauer-Emmett-Teller(BET) measurement, X-ray diffraction(XRD), transmission electron microscopy(TEM), ²⁹Si NMR(nuclear magnetic resonance) spectroscopy, NH₃-TPD(temperature programmed desorption) and CO₂-TPD. It is found that the catalyst with 20% mass fraction of MgO can form well-dispersed MgO in the inner pores of SBA-15 zeolite and the Mg-O-Si structure between MgO and SBA-15, which is beneficial to the production of 1,3-butadiene. Under the optimal reaction conditions of 350 ℃ and feed weight hourly space velocity of 2.64 h^-1, the best catalytic performance is obtained with the ethanol conversion of 55.8% and the 1,3-butadiene selectivity of 80.2%. The MgO/SBA-15 catalyst has potential applications in the production of butadiene from ethanol.

Key words: MgO/SBA-15 catalyst, ethanol, 1,3-butadiene

LIU Zongzhang,ZHANG Tong,XU Yuchao,JIANG　Haoxi,ZHANG　Minhua. Preparation of MgO/SBA-15 Catalyst and Its Catalytic Performance for the Synthesis of 1,3-Butadiene from Ethanol[J]. Chinese Journal of Applied Chemistry, 2019, 36(2): 176-181.

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Preparation of MgO/SBA-15 Catalyst and Its Catalytic Performance for the Synthesis of 1,3-Butadiene from Ethanol

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