Simple Transformation of Hierarchical Hollow Structures by Reduction of Metal-Organic Frameworks and Their Catalytic Activity in the Oxidation of Benzyl Alcohol

Suhyun Ju; Mohammad Yusuf; Seongwan Jang; Hyuntae Kang; Soohee Kim; Kang Hyun Park

doi:10.1002/chem.201900231

Simple Transformation of Hierarchical Hollow Structures by Reduction of Metal-Organic Frameworks and Their Catalytic Activity in the Oxidation of Benzyl Alcohol

Chemistry. 2019 Jun 12;25(33):7852-7859. doi: 10.1002/chem.201900231. Epub 2019 May 13.

Authors

Suhyun Ju¹, Mohammad Yusuf¹, Seongwan Jang¹, Hyuntae Kang¹, Soohee Kim¹, Kang Hyun Park¹

Affiliation

¹ Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan, 46241, Republic of Korea.

PMID: 30942495
DOI: 10.1002/chem.201900231

Abstract

Metal-organic framework (MOF)-based derivatives have been found to be promising heterogeneous catalysts for organic transformations. Herein, hollow-structure Cu-MOFs derived by reduction of Cu₃ (BTC)₂ (BTC=1,3,5-benzenetricarboxylate; denoted as RCB) were prepared by using hydrazine hydrate as a reducing agent under various conditions. The influence of hydrazine hydrate induced the structure of Cu₃ (BTC)₂ and led to dynamic variation in the interior and exterior as well as oxidation states of the Cu ion. The synthesized materials were characterized by SEM, TEM, N₂ sorption isotherms, XRD, and XPS. The product of the catalytic reaction was observed by GC-MS. In addition, the prepared RCBs were found to have excellent catalytic activity and selectivity for benzyl alcohol oxidation when assisted by 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO).

Keywords: MOFs; hollow structures; oxidation of benzyl alcohol; reduction.

Abstract

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