Boosting effect of single-atom Sn on catalytic activity of Ni towards synthesis of carbon nanofibers from ethylene

被引：4

作者：

Shubin, Yury V. ^{[1
]}

Maksimova, Tatyana A. ^{[2
]}

Popov, Anton A. ^{[1
]}

Varygin, Andrey D. ^{[1
]}

Fedorenko, Anastasiya D. ^{[1
]}

Gerasimov, Evgeny Y. ^{[2
]}

Mishakov, Ilya V. ^{[2
]}

Vedyagin, Aleksey A. ^{[2
]}

机构：

[1] Russian Acad Sci, Nikolaev Inst Inorgan Chem, Siberian Branch, Novosibirsk 630090, Russia

[2] Russian Acad Sci, Boreskov Inst Catalysis, Siberian Branch, Novosibirsk 630090, Russia

来源：

APPLIED CATALYSIS A-GENERAL | 2024年 / 670卷

基金：

俄罗斯科学基金会;

关键词：

Nickel; Single-atom Ni-Sn alloy; Catalytic decomposition of ethylene; CCVD; Carbon nanofibers; NICKEL METAL; DEHYDROGENATION; DECOMPOSITION; PROPANE; ALLOYS; FE; CU; 1,2-DICHLOROETHANE; ELECTRODEPOSITION; HYDROGENATION;

D O I：

10.1016/j.apcata.2023.119546

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nickel and its alloys are widely used for the synthesis of carbon nanofibers via catalytic chemical vapor depo-sition of various hydrocarbons. In the present research, a series of Ni-Sn alloys with tin loading varied in a range from 0.1 to 25.0 at% were prepared and characterized. Alloying of nickel with a small amount of tin was found to accelerate significantly the catalytic process of ethylene decomposition accompanied by carbon deposition. For the NiSn(0.25) sample, the carbon yield reaches 195 g/gcat after 30 min at 550 degrees C. At the highest Sn loading (25.0 at%), the process is completely suppressed. A new mechanism explaining the observed interaction of ethylene with Ni-Sn alloys was proposed. Single-atom Sn species are responsible for the increased catalytic ac-tivity. A single-atom Ni-Sn alloy is considered an efficient catalyst with enhanced stability for the production of carbon nanofibers.

引用

页数：13

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