Alkyne Semihydrogenation over Pd Nanoparticles Embedded in N,S-Doped Carbon Nanosheets,ACS Applied Nano Materials

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Alkyne Semihydrogenation over Pd Nanoparticles Embedded in N,S-Doped Carbon Nanosheets
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2021-09-06 , DOI: 10.1021/acsanm.1c01643
Long Feng ₁ , Wenxiu Yang ₁ , Yimiao Hou ₂ , Zhiyi Sun ₁ , Yaning Hu ₁ , Xiaoyan Li ₁ , Xuemin Hu ₁ , Shuo Zhang ₂ , Shuo Wang ₁ , Wenxing Chen ₃

Affiliation

A strategy using biological materials to prepare N,S-doped carbon covering Pd nanoparticles (Pd/N,S-C) from natural silk fibroin was developed. Wet chemical reduction and carbonization were used to synthesize the Pd/N,S-C catalyst. The as-prepared catalyst showed high activity (>99%) with satisfactory selectivity (86–99%) for semihydrogenation of varied alkynes to corresponding alkenes. In addition, this work also demonstrated that the PdC_x species disappeared and the effect of electron transfer between Pd and N,S-C enhanced when Pd/N,S-F (N,S-doped silk fibroin covering Pd nanocrystals) was calcined to form Pd/N,S-C, which was beneficial to improve its performance for hydrogenation. Meanwhile, the increase of specific surface area after carbonization and the embedded structure could also improve the catalytic activity of Pd/N,S-C and stereoselectivity to cis-alkenes.

中文翻译：

嵌入在 N,S 掺杂碳纳米片中的 Pd 纳米颗粒上的炔烃半氢化

开发了一种使用生物材料从天然丝素蛋白中制备 N,S 掺杂的碳覆盖 Pd 纳米粒子 (Pd/N,SC) 的策略。湿法化学还原和碳化用于合成 Pd/N,SC 催化剂。所制备的催化剂显示出高活性（> 99%）和令人满意的选择性（86-99%），用于将各种炔烃半氢化成相应的烯烃。此外，这项工作还证明了 PdC _x当Pd/N,SF（N,S掺杂的丝素蛋白覆盖Pd纳米晶）煅烧形成Pd/N,SC时，物种消失，Pd和N,SC之间的电子转移作用增强，有利于提高其性能用于加氢。同时，碳化后比表面积的增加和嵌入结构也可以提高Pd/N,SC的催化活性和顺式烯烃的立体选择性。

更新日期：2021-09-24

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