<italic style="font-style: italic">In-situ</italic> synthesis of rare earth Y-type zeolite enhanced by high-gravity technology

Xu Lang; Hou Wenhui; You Houmei; Sun Baochang; Chu Guangwen; Chen Jianfeng

doi:10.1016/j.cjche.2025.06.038

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In-situ synthesis of rare earth Y-type zeolite enhanced by high-gravity technology

Updated：2026-03-13

- In-situ synthesis of rare earth Y-type zeolite enhanced by high-gravity technology
- Chinese Journal of Chemical Engineering Vol. 89, Issue 1, Pages: 240-248(2026)
- Affiliations：
  
  State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
  Research Center of the Ministry of Education for High-gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing 100029, China
- Author bio：
  
  Corresponding author. E-mail address: sunbc@mail.buct.edu.cn(B. Sun).
- Funds：
- DOI：10.1016/j.cjche.2025.06.038
  CLC：
- Received：17 March 2025，
  
  Revised：2025-05-10，
  
  Accepted：11 June 2025，
  
  Online First：21 October 2025，
  
  Published：2026-01
- Accepted：
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Xu Lang, Hou Wenhui, You Houmei, et al. In-situ synthesis of rare earth Y-type zeolite enhanced by high-gravity technology[J]. Chinese Journal of Chemical Engineering, 2026, 89(1): 240-248. DOI: 10.1016/j.cjche.2025.06.038.
DOI：

Xu Lang, Hou Wenhui, You Houmei, et al. In-situ synthesis of rare earth Y-type zeolite enhanced by high-gravity technology[J]. Chinese Journal of Chemical Engineering, 2026, 89(1): 240-248. DOI: 10.1016/j.cjche.2025.06.038. DOI：

摘要

Abstract

Rare earth (RE) Y-type zeolite was synthesized

in situ

by acidic co-hydrolysis route and hydrothermal method. The key process parameters were optimized based on the RE utilization rate. The effect of inducing a rotating packed bed (RPB) in premixing and crystallization on crystallinity and RE utilization rate was further investigated. The results indicate that lanthanide (La) cations are successfully introduced into the sodalite cage of Y-type zeolite. The optimized conditions are that the molar ratio of Si/La is 150

premixing for 5 h

crystallization at 90

◦

C for 18 h

and calcination at 550

◦

C for 3.5 h. At this stage

the RE utilization rate reaches 74.5%. Compared with the conventional stirred tank reactor (STR)

RPB can effectively shorten the premixing time and crystallization time by 4.3 h and 6 h

improve the crystallinity by 23% and RE utilization rate by 7.5%. The RE utilization rate is more than 80% by RPB

surpassing the effectiveness of using the one-exchange one-calcination process in the traditional liquid ion exchange process. It is expected to provide a reference for the

in-situ

efficient and green synthesis of RE zeolite.

关键词

Keywords

references

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⁰

In-situ synthesis of rare earth Y-type zeolite enhanced by high-gravity technology

DOI：10.1016/j.cjche.2025.06.038

摘要

Abstract

关键词

Keywords

references