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Scalable synthesis and modular properties of tubular silicalite-1 membranes for industrial butane isomer separation. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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Yang Z, Peng M, Li Y, Wu X, Gui T, Li Y, Zhang F, Chen X, Kita H. Improved Esterification of Citric Acid and n-Butanol Using a Dense and Acid-Resistant Beta Zeolite Membrane. MEMBRANES 2022; 12:1269. [PMID: 36557176 PMCID: PMC9784803 DOI: 10.3390/membranes12121269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/08/2022] [Accepted: 12/12/2022] [Indexed: 06/17/2023]
Abstract
In this work, a dense and acid-resistant beta zeolite membrane was applied to improve the esterification of citric acid and n-butanol, for the first time. Through the continuous removal of the by-product water via pervaporation (PV), the conversion of citric acid was significantly enhanced from 71.7% to 99.2% using p-Toluenesulfonic acid (PTSA) as catalyst. PTSA was a well-known strong acid, and the membrane kept almost no change after PV-esterification, indicating the superior acid resistance of beta zeolite membrane. Compared to the use of acid-resistant MOR zeolite membrane by PV-esterification, a consistently higher conversion of citric acid was obtained using a high-flux beta zeolite membrane. The results showed that high water permeation on the beta zeolite membrane, with good acid resistance, had a strong promoting effect on esterification, leading to an improved conversion. In addition, the citric acid conversion of 97.7% could still be achieved by PV-esterification at a low reaction temperature of 388 K.
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Affiliation(s)
- Zhengquan Yang
- State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, Institute of Advanced Materials (IAM), Jiangxi Normal University, Nanchang 330022, China
| | - Mingyu Peng
- State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, Institute of Advanced Materials (IAM), Jiangxi Normal University, Nanchang 330022, China
| | - Yu Li
- State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, Institute of Advanced Materials (IAM), Jiangxi Normal University, Nanchang 330022, China
| | - Xiaowei Wu
- State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, Institute of Advanced Materials (IAM), Jiangxi Normal University, Nanchang 330022, China
| | - Tian Gui
- State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, Institute of Advanced Materials (IAM), Jiangxi Normal University, Nanchang 330022, China
| | - Yuqin Li
- State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, Institute of Advanced Materials (IAM), Jiangxi Normal University, Nanchang 330022, China
| | - Fei Zhang
- State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, Institute of Advanced Materials (IAM), Jiangxi Normal University, Nanchang 330022, China
| | - Xiangshu Chen
- State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, Institute of Advanced Materials (IAM), Jiangxi Normal University, Nanchang 330022, China
- Environmental Science and Engineering, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Ube 755-8611, Japan
| | - Hidetoshi Kita
- Environmental Science and Engineering, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Ube 755-8611, Japan
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Li Y, Li Y, Yang Z, Xu W, Gui T, Wu X, Zhu M, Chen X, Kita H. Rapid synthesis of high-selective Al-rich beta zeolite membrane via an organic template-free route for pervaporation dehydration of water-n-butanol mixtures. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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