Effect of SBA-15 Morphology in the Catalytic Performance of Pt/Ce-SBA-15 Catalyst for NOx Reduction

IF 2.1 4区化学 Q3 CHEMISTRY, PHYSICAL Catalysis Surveys from Asia Pub Date : 2024-10-14 DOI:10.1007/s10563-024-09438-x

Shyam Sunder Rao, Anjali Bharti, Vivek Kumar Patel, Sweta Sharma

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Abstract

This research used hydrothermal technique to synthesize three different morphologies of SBA-15 supports, such as rod, hexagonal prism, and spherical. Afterward, it impregnated Pt/Ce metal on the SBA-15 supports via wet-impregnation methods and investigated their NO reduction activity using the H₂-SCR technique in the temperature range of 50–450℃. The catalysts were characterized by Brunauer-Emmett-Teller (BET), X-Ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Scanning electron microscopy, energy dispersive X-ray spectroscopy (SEM-EDS), Transmission electron microscopy (TEM), and Raman spectroscopy. Among the catalysts, Pt/Ce-SBA-15-rod exhibited the best performance with NO conversion of 52.23% and N₂ selectivity of more than 83.25% at 150℃. The Pt/Ce-SBA-15-rod catalysts’ activation energy (21.188 kJ-mol^− 1) was the lowest of all the catalysts. The catalysts with the highest NO conversion have the highest BET properties, surface oxygen (30.33%), Ce³⁺ (40.23%), Pt (0) (70.45%), and oxygen storage capacity.

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来源期刊

Catalysis Surveys from Asia 化学-物理化学

CiteScore

4.80

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Early dissemination of important findings from Asia which may lead to new concepts in catalyst design is the main aim of this journal. Rapid, invited, short reviews and perspectives from academia and industry will constitute the major part of Catalysis Surveys from Asia . Surveys of recent progress and activities in catalytic science and technology and related areas in Asia will be covered regularly as well. We would appreciate critical comments from colleagues throughout the world about articles in Catalysis Surveys from Asia . If requested and thought appropriate, the comments will be included in the journal. We will be very happy if this journal stimulates global communication between scientists and engineers in the world of catalysis.