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

CHEN Liang; LI Ming-hang; MIAO Jie; TAN Guan-xi; JIN Guang-zhou

Volume 46 Issue 7

Jul. 2018

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Article Navigation > Journal of Fuel Chemistry and Technology > 2018 > 46(7): 864-870

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

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.

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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

Funds:

the National Basic Research Program of China 973 program

the National Basic Research Program of China 2012CB215002

More Information

Corresponding author: JIN Guang-zhou, E-mail:jinguangzhou@bipt.edu.cn
Received Date: 2018-03-13
Rev Recd Date: 2018-05-16

Available Online: 2021-01-23

Publish Date: 2018-07-10

Abstract

Abstract

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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References(25)

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