Citation: CHEN Liang, LI Ming-hang, MIAO Jie, TAN Guan-xi, JIN Guang-zhou. Study on n-butane catalytic cracking for promoting propylene production over nMoO_x·HZSM-5[J]. Journal of Fuel Chemistry and Technology, ;2018, 46(7): 864-870. shu

Study on n-butane catalytic cracking for promoting propylene production over nMoO_x·HZSM-5

Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, School of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China

Corresponding author: JIN Guang-zhou, jinguangzhou@bipt.edu.cn
Received Date: 13 March 2018
Revised Date: 16 May 2018

Fund Project: The project was supported by the National Basic Research Program of China (973 program, 2012CB215002)the National Basic Research Program of China 973 programthe National Basic Research Program of China 2012CB215002

Figures(7)

A series of nMoO_x·HZSM-5 single-phase complexes were prepared by incipient wetness impregnation, and characterized by XRD, NH₃-TPD, Py-FTIR, BET and SEM techniques. The n-butane catalytic cracking performance over nMoO_x·HZSM-5 was investigated by using a continuous flowing micro reactor. The results indicate that active component Mo is located in the cross of Z form channel and straight channel of HZSM-5 in the form of MoO_x clusters to generate a nMoO_x·HZSM-5 single-phase complex, causing the contraction of HZSM-5 lattice cell and the reduction in the lattice parameters and cell volume of HZSM-5 as well as the decrease in specific surface area of HZSM-5. The acidity of nMoO_x·HZSM-5 shows an increases firstly and then a decrease with the increasing dosage of active component Mo. The n-butane catalytic cracking conversion over nMoO_x·HZSM-5-0.75% is 73.83% at reaction temperature of 625℃ and gas space velocity of 5600 h^-1, slightly lower than that over HZSM-5. However, the propylene yield over nMoO_x·HZSM-5-0.75% reaches 13.13%, 2 percent points higher than that over HZSM-5, exhibiting a better performance on the promotion of propylene yield.
- nMoO_x·HZSM-5,
- single-phase complex,
- n-butane,
- propylene,
- conversion,
- yield
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Study on n-butane catalytic cracking for promoting propylene production over nMoOx·HZSM-5

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Study on n-butane catalytic cracking for promoting propylene production over nMoO_x·HZSM-5