Work

Mesoporous silica nanospheres-encaged metal-metalloid alloy nanoparticles as efficient alkyne semi-hydrogenation catalysts

Year: 2024

Type: article

Abstract: In this work, we report metal-metalloid Pd 2 B alloy nanoparticles as highly efficient and selective catalysts for semi-hydrogenations of alkynes . The mentioned materials feature the residence of small Pd 2 B nanoparticles in the cavities of hollow mesoporous silica nanospheres (Pd 2 B@HMSNs), and were synthesized by in situ transformation of Pd@HMSNs with B sources. At near room temperatures and atmospheric H 2 pressure, Pd 2 B@HMSNs exhibited high alkene selectivity for hydrogenations of a series of alkynes . Especially, such high alkene selectivity can be maintained with a prolonged reaction time, and nearly 100 % selectivity of cis to trans alkene is obtained for those internal alkynes. The excellent performance of Pd 2 B@HMSNs is originated from the residence of catalytic functionality inside hollow nanostructures and the change of electronic/geometric properties of surface Pd species by alloying with B, where the former improves their reusability and the latter suppresses the deep-hydrogenation of alkenes.

Source: Applied Catalysis A General

DOI: 10.1016/j.apcata.2024.120028

Authors: Lei Wang, Qianqian Zhou, Ru Hu, Shuaiwen Xu, Shenghu Zhou

Institution: East China University of Science and Technology

Language: English

Topic: Nanomaterials for catalytic reactions

Subfield: Organic Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,600

Funder: National Natural Science Foundation of China