Double perovskite of Ca3WO6 supported Ni-based catalysts for hydrogen production via auto-thermal reforming of acetic acid

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology Pub Date : 2025-04-24 DOI:10.1016/j.apt.2025.104888

Jianhong Li , Qi Chen , Mao Gan , Jinbo Liu , Ying Su , Lihong Huang

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Abstract

Acetic acid (HAc) derived from biomass is a rich resource for production of green hydrogen via auto-thermal reforming (ATR), while Ni-based catalysts for ATR of HAc are hindered by concerns of coke deposition, oxidation and sintering of active components. Herein, Ni-Ca-W-O catalysts with double perovskite structure were prepared by the Pechini method and employed in ATR reaction. The characterization results indicated that phase of Ca₃WO₆ with double perovskite structure was formed via introducing W species into CaO phase, while oxygen defect sites and abundant oxygen vacancies were found and effective to constrain coke deposition during ATR. Furthermore, with Ni species entering the Ca₃WO₆ lattice, there was strong interaction within Ni/Ca₃WO₆, forming stable Ni-Ca-W-O active centers with improved resistance to either oxidation or sintering of Ni⁰. As a result, the preferred Ni_0.08Ca_0.32W_0.07O_0.61±δ catalyst maintained high HAc conversion at 100 % and H₂ yield near 2.52 mol-H₂/mol-HAc, showing potential for hydrogen production via ATR of HAc.

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Ca3WO6双钙钛矿负载的镍基醋酸自热重整制氢催化剂

生物质提取的醋酸（HAc）是自热重整（ATR）制氢的丰富资源，而用于自热重整（HAc）的镍基催化剂存在焦炭沉积、氧化和活性组分烧结等问题。本文采用Pechini法制备了双钙钛矿结构的Ni-Ca-W-O催化剂，并将其用于ATR反应。表征结果表明，通过在CaO相中引入W，形成了具有双钙钛矿结构的Ca3WO6相，同时发现了氧缺陷位点和丰富的氧空位，有效地抑制了ATR过程中焦炭的沉积。此外，随着Ni元素进入Ca3WO6晶格，Ni/Ca3WO6之间存在强烈的相互作用，形成稳定的Ni- ca - w - o活性中心，提高了Ni0的抗氧化性和烧结性。结果表明，优选的ni0.08 ca0.32 w0.070 o0.61±δ催化剂保持了100%的高HAc转化率，H2产率接近2.52 mol-H2/mol-HAc，显示了通过HAc的ATR制氢的潜力。

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来源期刊

Advanced Powder Technology 工程技术-工程：化工

CiteScore

9.50

自引率

7.70%

发文量

424

审稿时长

55 days

期刊介绍： The aim of Advanced Powder Technology is to meet the demand for an international journal that integrates all aspects of science and technology research on powder and particulate materials. The journal fulfills this purpose by publishing original research papers, rapid communications, reviews, and translated articles by prominent researchers worldwide. The editorial work of Advanced Powder Technology, which was founded as the International Journal of the Society of Powder Technology, Japan, is now shared by distinguished board members, who operate in a unique framework designed to respond to the increasing global demand for articles on not only powder and particles, but also on various materials produced from them. Advanced Powder Technology covers various areas, but a discussion of powder and particles is required in articles. Topics include: Production of powder and particulate materials in gases and liquids(nanoparticles, fine ceramics, pharmaceuticals, novel functional materials, etc.); Aerosol and colloidal processing; Powder and particle characterization; Dynamics and phenomena; Calculation and simulation (CFD, DEM, Monte Carlo method, population balance, etc.); Measurement and control of powder processes; Particle modification; Comminution; Powder handling and operations (storage, transport, granulation, separation, fluidization, etc.)