Analysis of long term catalytic performance for isobutane alkylation catalyzed by NMA-AlCl<sub>3</sub> based ionic liquid analog

Pengcheng Hu; Zhitao Wu; Junlin Wang; Yuqing Huang; Yang Deng; Shufeng Zhou

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Analysis of long term catalytic performance for isobutane alkylation catalyzed by NMA-AlCl₃ based ionic liquid analog

Updated：2026-01-06

- Analysis of long term catalytic performance for isobutane alkylation catalyzed by NMA-AlCl₃ based ionic liquid analog
- Analysis of long term catalytic performance for isobutane alkylation catalyzed by NMA-AlCl₃ based ionic liquid analog
- 中国化学工程学报（英文版） 2019年27卷第8期页码：1857-1862
- Affiliations：
  
  College of Chemical Engineering, Huaqiao University,Xiamen,China,361021
- Author bio：
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  中图分类号：
- 纸质出版：2019
- Accepted：
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Pengcheng Hu, Zhitao Wu, Junlin Wang, 等. Analysis of long term catalytic performance for isobutane alkylation catalyzed by NMA-AlCl₃ based ionic liquid analog[J]. 中国化学工程学报（英文版）, 2019,27(8):1857-1862.

based ionic liquid analog[J]. 中国化学工程学报, 2019, 27(8): 1857-1862.
Pengcheng Hu, Zhitao Wu, Junlin Wang, 等. Analysis of long term catalytic performance for isobutane alkylation catalyzed by NMA-AlCl₃ based ionic liquid analog[J]. 中国化学工程学报（英文版）, 2019,27(8):1857-1862. DOI：

based ionic liquid analog[J]. 中国化学工程学报, 2019, 27(8): 1857-1862. DOI：

摘要

Abstract

Isobutane alkylation with 2-butene to produce high-quality gasoline was catalyzed by

-methylacetamide (NMA)-AlCl

based ionic liquid (IL) analog with a NMA/AlCl

molar ratio of 0.75 and CuCl modification

which was marked as CuCl-modified 0.75NMA-1.0AlCl

. The long-term experiment was carried out in the autoclave operated in continuous mode to investigate the distribution of alkylate under different experimental nodes. The result indicated that the long-term alkylation was divided into three stages:rising

stable

and descending regions. C8 selectivity and molar ratio of trimethylpentanes (TMPs) to dimethylhexanes (DMHs) reached the highest level in the stable region

and research octane number (RON) of alkylate was as high as 97. Anionic Al species ([Al

]

[AlCuCl

]

) and cationic Al species ([AlCl

]

) from IL analog as two active Lewis acidic species played a catalytic role in the long-term alkylation

whereas the neutral Al species did not participate into the alkylation. Moreover

the structure of CuCl-modified 0.75NMA-1.0AlCl

was destroyed after the deactivation

and CuCl was enriched in the CD

-insoluble substance

resulting in a decreasing TMP/DMH ratio. The catalytic lifetime of IL analog was similar with CuCl-modified 0.55Et

NHCl-1.0AlCl

but IL analog had a lower

cost.

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Analysis of long term catalytic performance for isobutane alkylation catalyzed by NMA-AlCl3 based ionic liquid analog

Analysis of long term catalytic performance for isobutane alkylation catalyzed by NMA-AlCl3 based ionic liquid analog

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摘要

Abstract

关键词

Keywords

references

Analysis of long term catalytic performance for isobutane alkylation catalyzed by NMA-AlCl₃ based ionic liquid analog

Analysis of long term catalytic performance for isobutane alkylation catalyzed by NMA-AlCl₃ based ionic liquid analog