Kaolin-derived zeolite-A-supported catalysts for catalytic methanation of carbon dioxide

IF 1.9 4区材料科学 Q3 Materials Science Journal of the Australian Ceramic Society Pub Date : 2022-11-09 DOI:10.1007/s41779-022-00814-2

Cao Son Do, Thi Kieu Anh Vo, Thi Thom Nguyen, Le Thanh Nguyen Huynh, Viet Hai Le, Nguyen Thai Hoang, Dai Lam Tran, Thi Mai Huong Nguyen, Thi Nam Pham, Nguyen Thi Thu Trang

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Abstract

Zeolites, a type of microporous hydrated aluminosilicate minerals, are a popular candidate in the field of catalysis due to their high thermal stability as well as their good absorption capability. In this study, Vietnamese kaolin was employed as an unexpensive and abundant substitute for the synthesis of zeolite A. Nickel as well as several metallic were also incorporated in zeolite via ion exchange method. Ten-percent Ni/zeolite catalyst was studied the carbon dioxide (CO₂) conversion to methane (CH₄) in a fixed-bed tubular reactor. We observed that the highest catalytic activity of 55.2% CO₂ conversion and 92.7% CH₄ selectivity was obtained at 350 °C, 1 atm, H₂:CO₂ ratio of 4:1, and gas hourly space velocity (GHSV) of 9000 mL g⁻¹ h⁻¹. These results show a promising pathway of modifying Vietnamese natural kaolin as an economical and efficient alternative material for the preparation of zeolite A together with its catalytic application.

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高岭土衍生沸石- a负载型催化剂催化二氧化碳甲烷化反应

摘要沸石是一种微孔水合铝硅酸盐矿物，具有较高的热稳定性和良好的吸附性能，是催化领域的热门候选材料。本研究采用越南高岭土作为a型沸石的廉价而丰富的替代品，通过离子交换法在沸石中掺入镍及几种金属。在固定床管式反应器中，研究了10%镍/沸石催化剂催化二氧化碳(CO2)转化为甲烷(CH4)。结果表明，在350℃，1atm, H2:CO2比为4:1，气体每小时空速(GHSV)为9000 mL g−1 h−1时，催化活性最高，CO2转化率为55.2%，CH4选择性为92.7%。这些结果为越南天然高岭土作为一种经济高效的替代材料制备a型沸石及其催化应用提供了一条有希望的途径。

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来源期刊

Journal of the Australian Ceramic Society MATERIALS SCIENCE, CERAMICS-

CiteScore

3.20

自引率

5.30%

发文量

审稿时长

>12 weeks

期刊介绍： Publishes high quality research and technical papers in all areas of ceramic and related materials Spans the broad and growing fields of ceramic technology, material science and bioceramics Chronicles new advances in ceramic materials, manufacturing processes and applications Journal of the Australian Ceramic Society since 1965 Professional language editing service is available through our affiliates Nature Research Editing Service and American Journal Experts at the author''s cost and does not guarantee that the manuscript will be reviewed or accepted