Details

Autor(en) / Beteiligte

• Chen, Hao
• Yang, Zhenzhen
• Zhang, Zihao
• Chen, Zitao
• Chi, Miaofang
• Wang, Song
• Fu, Jie
• Dai, Sheng

Titel

Construction of a Nanoporous Highly Crystalline Hexagonal Boron Nitride from an Amorphous Precursor for Catalytic Dehydrogenation

Ist Teil von

• Angewandte Chemie, 2019-07, Vol.131 (31), p.10736-10740

Ort / Verlag

Weinheim: Wiley Subscription Services, Inc

Erscheinungsjahr

2019

Quelle

Wiley Online Library

Beschreibungen/Notizen

• Hexagonal boron nitride (h‐BN) is regarded as a graphene analogue and exhibits important characteristics and vast application potentials. However, discovering a facile method for the preparation of nanoporous crystalline h‐BN nanosheets (h‐BNNS) is still a challenge. Herein, a novel and simple route for the conversion of amorphous h‐BN precursors into highly crystalline h‐BNNS was achieved through a successive dissolution–precipitation/crystallization process in the presence of magnesium. The h‐BNNS has high crystallinity, high porosity with a surface area of 347 m2 g−1, high purity, and enhanced thermal stability. Improved catalytic performance of crystalline h‐BNNS was evidenced by its much higher catalytic efficiency in the dehydrogenation of dodecahydro‐N‐ethylcarbazole, compared with its amorphous h‐BN precursor, as well as other precious‐metal‐loaded heterogeneous catalysts. Hochkristalline, nanoporöse, hexagonale Bornitrid‐Nanoblättchen (h‐BNNS) wurden unter Verwendung amorpher h‐BN‐Vorstufen über einen Prozess aus Auflösung und Ausfällung/Kristallisation in Gegenwart von Magnesium hergestellt. Das kristalline h‐BNNS ist ein Katalysator für die Dehydrierung von Dodecahydro‐N‐ethylcarbazol.