Phosphoric acid-modified commercial kieselguhr supported palladium nanoparticles as efficient catalysts for low-temperature hydrodeoxygenation of lignin derivatives in water. Issue 4 (26th January 2022)

• Record Type: Journal Article
• Authors: Yangcheng, Ruixue; Ran, Jiansu; Liu, Zhaohui; Cui, Yuntong; Wang, Jianjian
• Is Part Of: Green chemistry. Volume 24:Issue 4(2022)
• Page Start: 1570
• Page End: 1577
• Publication Date: 2022-01-26
• Subjects: Environmental chemistry -- Industrial applications -- Periodicals; Environmental management -- Periodicals; 660
• DOI: 10.1039/d1gc04243b
• Languages: English
• ISSNs: 1463-9262

Abstract

Abstract : Phosphoric species incorporated onto commercial Celite interacting with Pd NPs greatly enhance the efficiency of low-temperature hydrodeoxygenation of lignin derivatives in water via accelerating the conversion of the generated intermediate. Abstract : Efficient production of high value-added chemicals and biofuels via low-temperature chemoselective HDO of lignin derivatives in water is still a challenge. Here, we construct a low-cost, active and stable Pd/PCE catalyst using phosphoric acid-modified commercial Celite (PCE) as the support, and this catalyst exhibits excellent activity in low-temperature HDO of vanillin as well as other lignin derivatives in water. The superior catalytic performance is due to the presence of P species on the surface of Pd/PCE, accelerating the selective conversion of the intermediate into the final product. Detailed experimental and mechanistic studies reveal that the rapid conversion of the intermediate to the final product proceeds via a free-radical process in an interfacial microenvironment created by intimate interacting between the P species and Pd NPs. The insights of this work provide a new low-cost catalytic system for efficient production of valuable chemicals and future biofuels from lignin derivatives.