Study on the combustion of toluene by acid etching assisted ultrasonic supported low content Pt catalyst

IF 4.7 2区化学 Q2 CHEMISTRY, PHYSICAL

Applied Catalysis A: General Pub Date : 2024-09-27 DOI:10.1016/j.apcata.2024.119970

引用次数: 0

Abstract

Catalytic combustion technology is an effective method for the treatment of volatile organic compounds (VOCs). However, the catalytic activity of loaded noble metal catalysts is limited by factors such as high noble metal dosage and poor stability. In this study, a method for the preparation of acid etching assisted ultrasonic loaded low-content Pt-cordierite catalysts was proposed. By comparing with the 0.5 % Pt/cordierite catalyst prepared without acid etching, it was found that the catalytic activity of toluene of the 0.5 % Pt/cordierite-HNO₃ catalyst was significantly improved, and the T₉₀ of toluene combustion was only 201 ℃, which indicated that the acid etching effectively promoted the interfacial bonding between the active component Pt and the carrier. Finally, it was confirmed by XPS that the active component Pt in the 0.5 % Pt/cordierite-HNO₃ catalyst existed in multiple valence states, which effectively promoted the catalytic combustion of toluene.

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酸蚀辅助超声波支撑低含量铂催化剂燃烧甲苯的研究

催化燃烧技术是处理挥发性有机化合物（VOC）的有效方法。然而，负载贵金属催化剂的催化活性受到贵金属用量大、稳定性差等因素的限制。本研究提出了一种酸蚀刻辅助超声波负载低含量铂堇青石催化剂的制备方法。与未经酸蚀的 0.5 % Pt/ 堇青石催化剂相比，发现 0.5 % Pt/ 堇青石-HNO3催化剂的甲苯催化活性显著提高，甲苯燃烧 T90 仅为 201 ℃，这表明酸蚀有效促进了活性组分铂与载体的界面结合。最后，XPS 证实 0.5 % Pt/cordierite-HNO3 催化剂中的活性组分铂存在多种价态，有效促进了甲苯的催化燃烧。

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

Applied Catalysis A: General 化学-环境科学

CiteScore

9.00

自引率

5.50%

发文量

415

审稿时长

24 days

期刊介绍： Applied Catalysis A: General publishes original papers on all aspects of catalysis of basic and practical interest to chemical scientists in both industrial and academic fields, with an emphasis onnew understanding of catalysts and catalytic reactions, new catalytic materials, new techniques, and new processes, especially those that have potential practical implications. Papers that report results of a thorough study or optimization of systems or processes that are well understood, widely studied, or minor variations of known ones are discouraged. Authors should include statements in a separate section "Justification for Publication" of how the manuscript fits the scope of the journal in the cover letter to the editors. Submissions without such justification will be rejected without review.