Covalent oxygen BOx-M catalysts for the oxidative dehydrogenation of propane

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-09-11 DOI:10.1016/j.jtice.2025.106386

Xiaoqing Xu , Yuhan Sun , Xiangze Yu, Rui Huang, Renjie Ji, Jiale Xu, Jianxiang Li, Ruifan Zhou, Qiang Zhang, Xiaoyu Yan

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Abstract

Background

Compared to propane dehydrogenation (PDH) technology, propane oxidative dehydrogenation (ODHP) technology represents an effective approach to overcoming thermodynamic limitations. Supported boron oxide catalysts demonstrate promising potential by co-producing high-value ethylene while enhancing olefin selectivity. However, the critical challenge impeding the development of boron-based catalysts lies in the evaporation-induced loss of active components (boron oxide) under calcination process.

Methods

BO_x−M (M = SnO₂, SiO₂, MgO, CaO, MgSO₄, CaSO₄) catalysts with 10 wt% boron trioxide loading were prepared by simple co-impregnation method using different supports.

Significant findings

Compared with other catalysts, the BO_x-SnO₂, BO_x-CaSO₄, and BO_x−MgSO₄ systems featuring covalent oxygen-containing supports demonstrated superior catalytic performance, achieving propane conversions of 50.1 %, 49.4 %, and 48.9 %, respectively. Analysis revealed that the covalently bonded oxygen in the support forms covalent bridges with the active BO₃ species, thereby enhancing the stable interactions between the support and active components. This effectively mitigates the loss of active species during calcination and improves the catalytic activity. These findings provide a feasible pathway for developing high-performance catalytic systems for ODHP.

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丙烷氧化脱氢用共价氧BOx-M催化剂

与丙烷脱氢（PDH）技术相比，丙烷氧化脱氢（ODHP）技术是克服热力学限制的有效途径。负载型氧化硼催化剂在提高烯烃选择性的同时共产高值乙烯，显示出良好的潜力。然而，阻碍硼基催化剂发展的关键挑战在于煅烧过程中活性组分（氧化硼）的蒸发损失。方法采用不同载体，采用简单共浸渍法制备了负载10 wt%三氧化二硼的sbox−M （M = SnO2、SiO2、MgO、CaO、MgSO4、CaSO4）催化剂。与其他催化剂相比，具有共价含氧载体的BOx- sno2、BOx- caso4和BOx- MgSO4体系表现出更优异的催化性能，丙烷转化率分别为50.1%、49.4%和48.9%。分析表明，载体中的共价键氧与活性BO3形成共价桥，从而增强了载体与活性组分之间的稳定相互作用。这有效地减轻了煅烧过程中活性物质的损失，提高了催化活性。这些发现为开发高性能的ODHP催化体系提供了可行的途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.