Dehydrogenation, Heterogeneous catalysis
Chemical Engineering | Chemistry
Tin assisted fully exposed Pt clusters are fabricated on the core-shell nanodiamond@graphene (ND@G) hybrid support (a-PtSn/ND@G). The obtained atomically dispersed Pt clusters, with an average Pt atom number of 3, were anchored over the ND@Gsupport by the assistance of Sn atoms as a partition agent and through the Pt-C bond between Pt clusters and defect-rich graphene nanoshell. The atomically dispersed Pt clusters guaranteed a full metal availability to the reactants, a high thermal stability, and an optimized adsorption/desorption behavior. It inhibits the side reactions and enhances catalytic performance in direct dehydrogenation of n-butane at a low temperature of 450 °C, leading to >98% selectivity toward olefin products, and the turnover frequency (TOF) of a-PtSn/ND@G is approximately 3.9 times higher than that of the traditional Pt3Sn alloy catalyst supported on Al2O3 (Pt3Sn/Al2O3).
Zhang, Jiayun; Deng, Yuchen; Cai, Xiangbin; Chen, Yunlei; Peng, Mi; Jia, Zhimin; Jiang, Zheng; Ren, Pengju; Yao, Siyu; Xie, Jinglin; Xiao, Dequan; Wen, Xiao-Dong; Wang, Ning; Liu, Hongyang; and Ma, Ding, "Tin Assisted Fully Exposed Platinum Clusters Stabilized on Defect-Rich Graphene for Dehydrogenation Reaction" (2019). Chemistry and Chemical Engineering Faculty Publications. 33.
Zhang, J., Deng, Y., Cai, X., Chen, Y., Peng, M., Jia, Z., ... & Xiao, D. (2019). Tin Assisted Fully Exposed Platinum Clusters Stabilized on Defect-Rich Graphene for Dehydrogenation Reaction. ACS Catalysis. DOI: 10.1021/acscatal.9b00601