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Synthesis, Characterization and Catalytic Performance of MOR/SBA-15 Composite Zeolite |
Author Name | Affiliation | E-mail | HAN Hai-Bo | State Key Laboratory for Heavy Oil Processing, China University of Petroleum, Qingdao, Shandong 266580, China Luoyang R & D Center of Technology of SINOPEC Engineering(Group) Co., Ltd., Luoyang, Henan 471003, China | | WANG You-He | State Key Laboratory for Heavy Oil Processing, China University of Petroleum, Qingdao, Shandong 266580, China | | LI Kang | Luoyang R & D Center of Technology of SINOPEC Engineering(Group) Co., Ltd., Luoyang, Henan 471003, China | | LEI Jie | Luoyang R & D Center of Technology of SINOPEC Engineering(Group) Co., Ltd., Luoyang, Henan 471003, China | | LIU Dan-He | Luoyang R & D Center of Technology of SINOPEC Engineering(Group) Co., Ltd., Luoyang, Henan 471003, China | | YAN Zi-Feng | State Key Laboratory for Heavy Oil Processing, China University of Petroleum, Qingdao, Shandong 266580, China | zfyancat@upc.edu.cn |
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Abstract: The hydrothermal synthesis of MOR/SBA-15 composite zeolite has been achieved by employing MOR nanocrystalline and tetraethyl orthosilicate (TEOS) as silica source, and triblock copolymer P123 as hard template. The catalyst was characterized through an integrated method including XRD, SEM, TEM and EDX, and the corresponding catalytic performance was evaluated in the conversion of diethyl ether (DME) to ethanol in a fixed-bed reactor. The results show that MOR nanocrystalline, a building unit for SBA-15, can be successfully grafted in the mesopore framework of SBA-15 by controlling the addition of MOR nanocrystalline. The obtained composite zeolite possesses both the characteristic diffraction peaks of MOR and SBA-15. The specific surface area and total pore volume, compared with SBA-15, decrease from 756 m2·g-1, 1.07 m3·g-1 to 628 m2·g-1, 0.85 m3·g-1, respectively. And the pore diameter in average raises from 8.1 to 9.3 nm. An extra Cu modification of the composite zeolite allows a bifunctional catalytic performance of carbonylation with CuMOR and hydrogenation with CuSBA-15. The catalyst evaluation tests show that the conversion of DME is 43.6% and the selectivity to ethanol is 95.3%, indicating a one-step transformation from DME to ethanol over CuMOR/SBA-15 composite zeolite. |
Keywords: MOR nano crystalline MOR/SBA-15 composite zeolite MDE bifunctional catalyst |
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HAN Hai-Bo,WANG You-He,LI Kang,LEI Jie,LIU Dan-He,YAN Zi-Feng.Synthesis, Characterization and Catalytic Performance of MOR/SBA-15 Composite Zeolite[J].Chinese Journal of Inorganic Chemistry,2018,34(8):1477-1482. |
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