A Catalyst of Pd@MIL‐101@SGO Catalyzes Epoxidation and Hydroxymethoxylation Tandem Reactions of Styrene. Issue 12 (26th March 2020)

• Record Type: Journal Article
• Authors: Tang, Hong; Zhou, Mei‐Li; Li, Xin; Zhang, Yu‐Yang; Han, Zheng‐Bo
• Is Part Of: ChemistrySelect. Volume 5:Issue 12(2020)
• Page Start: 3724
• Page End: 3729
• Publication Date: 2020-03-26
• Subjects: heterogeneous catalysis -- metal organic frameworks -- palladium nanoparticles -- sulfonated graphene oxide -- tandem reaction; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.202000111
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: Brönsted acid and metal nanoparticles are important catalytic functional groups. In this work, a bifunctional heterogeneous catalyst with both strong Brönsted acid and metal nanoparticles was prepared. First Brönsted acid groups were obtained by sulfonating graphene oxide, next metal organic frameworks MIL‐101 (Cr) grew on sulfonated graphene oxide (SGO), then palladium nanoparticles (NPs) were encapsulated in MIL‐101@SGO composites. The catalyst was characterized by a variety of different techniques including XRD, SEM, TEM, EDS, FT‐IR, TGA, and nitrogen physisorption measurements. Tandem heterogeneous catalysis of Pd@MIL‐101@SGO was investigated for the one‐pot direct conversion of styrene into β‐alkoxy alcohol. The catalyst retained high catalytic activity after 5 times of reuses in aqueous solutions. No loss of crystal structure was detected by PXRD and no leakage of Pd was detected by ICP‐AES. Therefore, Pd@MIL‐101@SGO proved to be an effective recyclable heterogeneous catalyst for synthesizing β‐alkoxy alcohol and exhibited potential application in industry. Abstract : A bifunctional heterogeneous catalyst with both strong Brönsted acid and metal nanoparticles was prepared. First Brönsted acid groups were obtained by sulfonating graphene oxide, next metal organic frameworks MIL‐101 (Cr) grew on sulfonated graphene oxide (SGO), then palladium nanoparticles (NPs) were encapsulated in MIL‐101@SGO composites. Heterogeneous catalysts of Pd@MIL‐101@SGO were investigated for catalyzing one‐pot tandem reactions of [a] epoxidation and [b] hydroxymethoxylation. The catalyst retained high catalytic activity after fifith reuses.