Balancing acetylene and hydrogen chloride adsorption through gold-copper-nickel synergistic interactions for enhanced acetylene hydrochlorination

IF 3.5 3区工程技术 Q2 ENGINEERING, CHEMICAL

AIChE Journal Pub Date : 2025-05-21 DOI:10.1002/aic.18904

Xinyuan Wang, Dingqiang Feng, Linfeng Li, Tiantong Zhang, Bao Wang, Jian Li, Yunsheng Dai, Wei Li, Jinli Zhang, Jiangjiexing Wu

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引用次数: 0

Abstract

Metal promoters enhancing Au catalysts present a promising alternative to toxic mercury chloride. However, achieving an optimal balance between the synergistic benefits of metal promoters and challenges like coke formation remains a significant hurdle. Herein, a low-loading Au catalyst (0.15 wt.%), synergistically modulated by copper and nickel (designated as AuCu₁₆Ni/AC), was developed. The AuCu₁₆Ni/AC catalyst exhibits a dynamic restructuring mechanism and synergistic effects, enabling balanced adsorption of acetylene (C₂H₂) and hydrogen chloride. This enhances catalytic efficiency, effectively suppresses coke formation, and significantly improves catalyst stability. As a result, the AuCu₁₆Ni/AC catalyst achieves outstanding performance, with a high C₂H₂ conversion rate of 93.03% under C₂H₂ gas hourly space velocity conditions of 540 h⁻¹ and a remarkably low deactivation rate of 0.12% h⁻¹. This work provides a low-loading, highly stable catalyst with promising industrial applicability while offering novel insights and a theoretical basis for the design of multi-component catalysts.

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通过金-铜-镍协同作用平衡乙炔和氯化氢的吸附，增强乙炔的加氢氯化作用

金属促进剂增强金催化剂是一种有前途的替代有毒的氯化汞。然而，在金属促进剂的协同效益和焦炭形成等挑战之间实现最佳平衡仍然是一个重大障碍。本文开发了一种低负荷Au催化剂（0.15 wt.%），由铜和镍协同调节（称为AuCu16Ni/AC）。AuCu16Ni/AC催化剂表现出动态重组机制和协同效应，能够平衡吸附乙炔（C2H2）和氯化氢。这提高了催化效率，有效地抑制了焦炭的形成，并显著提高了催化剂的稳定性。结果表明，在C2H2气体每小时空速为540 h−1的条件下，AuCu16Ni/AC催化剂的C2H2转化率高达93.03%，失活率极低，为0.12% h−1。本研究提供了一种低负荷、高稳定、具有工业应用前景的催化剂，同时为多组分催化剂的设计提供了新的见解和理论基础。

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来源期刊

AIChE Journal 工程技术-工程：化工

CiteScore

7.10

自引率

10.80%

发文量

411

审稿时长

3.6 months

期刊介绍： The AIChE Journal is the premier research monthly in chemical engineering and related fields. This peer-reviewed and broad-based journal reports on the most important and latest technological advances in core areas of chemical engineering as well as in other relevant engineering disciplines. To keep abreast with the progressive outlook of the profession, the Journal has been expanding the scope of its editorial contents to include such fast developing areas as biotechnology, electrochemical engineering, and environmental engineering. The AIChE Journal is indeed the global communications vehicle for the world-renowned researchers to exchange top-notch research findings with one another. Subscribing to the AIChE Journal is like having immediate access to nine topical journals in the field. Articles are categorized according to the following topical areas: Biomolecular Engineering, Bioengineering, Biochemicals, Biofuels, and Food Inorganic Materials: Synthesis and Processing Particle Technology and Fluidization Process Systems Engineering Reaction Engineering, Kinetics and Catalysis Separations: Materials, Devices and Processes Soft Materials: Synthesis, Processing and Products Thermodynamics and Molecular-Scale Phenomena Transport Phenomena and Fluid Mechanics.