Effect of acid strength distribution on conversion of FCC gasoline over a ZSM-5 zeolite catalyst |
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| Authors: | Zhihua Wu Shenglin Liu Sujuan Xie Qingxia Wang Xinhua Qian Longya Xu |
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| Affiliation: | (1) State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, CAS,, P. O. Box 110, Dalian 116023, China;(2) State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, CAS, P. O. Box 110, Dalian 116023, China;(3) State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, CAS, P. O. Box 110, Dalian 116023, China;(4) State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, CAS, P. O. Box 110, Dalian 116023, China;(5) State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, CAS, P. O. Box 110, Dalian 116023, China;(6) State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, CAS, P. O. Box 110, Dalian 116023, China |
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| Abstract: | ![]()
Summary Acid strength distribution and the distribution of aromatics formed in the FCC gasoline conversion reaction on a ZSM-5 zeolite with different Na contents have been studied. With increasing Na content in the ZSM-5 zeolite, the acid sites determined by NH3-TPD technique, especially the strong acid sites, clearly decrease. When used as catalyst for the aromatization reaction, the transformation of olefins in the FCC gasoline into aromatics is governed directly by the strong acid sites on the ZSM-5 catalyst. Only under the conditions that a ZSM-5 catalyst possesses suitable strong acid sites is reaction temperature favorable for the aromatics formed. |
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| Keywords: | Acid strength FCC gasoline aromatics ZSM-5 catalyst |
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