Production of methanol from carbon dioxide using palladium-copper-zinc loaded on MCM-41: Comparison of catalysts synthesized from flame spray pyrolysis and sol-gel method using silica source from rice husk ash. (20th January 2017)

• Record Type: Journal Article
• Authors: Siriworarat, Kritsada; Deerattrakul, Varisara; Dittanet, Peerapan; Kongkachuichay, Paisan
• Is Part Of: Journal of cleaner production. Volume 142:Part 3(2017)
• Page Start: 1234
• Page End: 1243
• Publication Date: 2017-01-20
• Subjects: Pd -- Cu -- Zn -- MCM-41 -- Flame spray pyrolysis -- CO2 hydrogenation; Factory and trade waste -- Management -- Periodicals; Manufactures -- Environmental aspects -- Periodicals; Déchets industriels -- Gestion -- Périodiques; Usines -- Aspect de l'environnement -- Périodiques; 628.5
• DOI: 10.1016/j.jclepro.2016.07.099
• Languages: English
• ISSNs: 0959-6526

Abstract

Abstract: Carbon dioxide hydrogenation is an industrially important reaction to convert excess carbon dioxide to value added compounds such as hydrocarbon, carbon monoxide, and methanol. In this study, copper (Cu)-zinc (Zn) loaded on Mobil Composition of Matter No. 41 (MCM-41) promoted with palladium (Pd) was used as a catalyst in carbon dioxide hydrogenation reaction for methanol production. The MCM-41 supports synthesized via sol-gel process and flame spray pyrolysis were compared regarding their use in carbon dioxide hydrogenation. The effect of metal loading and the role of palladium were investigated. The carbon dioxide hydrogenation was conducted under conditions—T = 250 °C, P = 25 bar, hydrogen:carbon dioxide = 3:1 (by volume). The experimental results show that the MCM-41 was successfully synthesized by both methods. The promoted catalysts with palladium show the changes in catalyst morphology, temperature reduction, specific surface area, average pore size, and pore volume. The promoted catalysts also exhibit higher performance than the catalyst without promoter. The catalyst containing 15% palladium, 25% copper, and 25% zinc (by weight) loaded on MCM-41 gave the highest performance of 25% methanol selectivity and 112 g/kgcat h space time yield of methanol due to the synergetic effect of copper-palladium and high dispersion of metals that promoted the methanol production. Graphical abstract: Highlights: Rice husk ash from industries was used to produce MCM-41. The MCM-41 was successfully synthesized by flame spray pyrolysis. Pd improved the performance of Cu-Zn/MCM-41 catalyst for CO2 hydrogenation. CO2 conversion of 20% and methanol yield of 222 g/kgcat.hr were achieved.