Evaluation of the impact of hydrothermal synthesis parameters of CuFe2O4/CeO2-MgO catalysts in water-gas shift reaction

IF 3.7 3区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Research & Design Pub Date : 2025-05-07 DOI:10.1016/j.cherd.2025.05.004

Maryam Hatefi , Armin Ourang , Talaat Moeini , Fereshteh Meshkani

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引用次数: 0

Abstract

A CuFe₂O₄/CeO₂-MgO sample was selected for the first time for the high-temperature water-gas shift process and was made using the hydrothermal method followed by impregnating. The hydrothermal time (16, 20, and 24 h), autoclave temperature (100, 120, and 140 °C), calcination temperature (400, 450, and 500 °C), and PVP content (zero, 0.3, and 0.6 g) as essential agents in the efficiency of the desired material were examined. The properties of the materials were extensively analyzed through BET-BJH, XRD, TPR, SEM, and TGA-DTA techniques. Under specified conditions, i.e., time of 20 h hydrothermal, T_autoclave= 100°C, and T_calcination= 400°C were created, the vast S_BET (60.9 m²/g) and lowest pore diameter (7.6 nm). Also, the PVP presence adopted in the present study confirmed the increase in the catalyst's BET area. Under ideal conditions, the 54 % CO conversion was obtained at 400 °C and GHSV of 30000 ml/h.g_cat and steam/dry gas= 0.6 with an excellent lifetime of 3000 min.

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水热合成CuFe2O4/CeO2-MgO催化剂对水气转换反应影响的评价

首次选择CuFe2O4/CeO2-MgO样品进行高温水气转换工艺，采用水热法制备，然后浸渍。考察了水热时间（16、20和24 h）、高压灭菌温度（100、120和140 °C）、煅烧温度（400、450和500 °C）和PVP含量（0、0.3和0.6 g）作为影响所需材料效率的重要因素。通过BET-BJH、XRD、TPR、SEM、TGA-DTA等技术对材料的性能进行了分析。在特定条件下，即水热时间为20 h，高压釜= 100℃，煅烧= 400℃，得到了最大的SBET（60.9 m2/g）和最小的孔径（7.6 nm）。此外，本研究中采用的PVP存在证实了催化剂的BET面积的增加。在理想条件下，在400℃和30000 ml/h的GHSV下，CO转化率可达54 %。Gcat和蒸汽/干气= 0.6，优良的寿命为3000 分钟。

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来源期刊

Chemical Engineering Research & Design 工程技术-工程：化工

CiteScore

6.10

自引率

7.70%

发文量

623

审稿时长

42 days

期刊介绍： ChERD aims to be the principal international journal for publication of high quality, original papers in chemical engineering. Papers showing how research results can be used in chemical engineering design, and accounts of experimental or theoretical research work bringing new perspectives to established principles, highlighting unsolved problems or indicating directions for future research, are particularly welcome. Contributions that deal with new developments in plant or processes and that can be given quantitative expression are encouraged. The journal is especially interested in papers that extend the boundaries of traditional chemical engineering.