N-Doped Defective Graphene from Biomass as Catalyst for CO2 Hydrogenation to Methane

被引：36

作者：

Jurca, Bogdan ^{[1
]}

Bucur, Cristina ^{[2
]}

Primo, Ana ^{[3
]}

Concepcion, Patricia ^{[3
]}

Parvulescu, Vasile I. ^{[1
]}

Garcia, Hermenegildo ^{[3
]}

机构：

[1] Univ Bucharest, Fac Chem, Dept Organ Chem Biochem & Catalysis, Bdul Regina Elisabeta 4-12, Bucharest 030016, Romania

[2] Natl Inst Mat Phys, Dept Surfaces & Interfaces, Atomistilor 405 A, Magurele Ilfov 077125, Romania

[3] Univ Politecn Valencia, Consejo Super Invest Cient, Inst Univ Tecnol Quim, Av Naranjos S-N, E-46022 Valencia, Spain

来源：

CHEMCATCHEM | 2019年 / 11卷 / 03期

关键词：

N-doped defective graphene; hydrogenation of CO2 to methane; pyridinic active species; carbamate intermediates; RAY PHOTOELECTRON-SPECTROSCOPY; CARBON-DIOXIDE; ACTIVE-SITES; CARBOCATALYSIS; OXIDATION; CHITOSAN; WASTES; IRON;

D O I：

10.1002/cctc.201801984

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：

N-doped, defective graphene obtained by pyrolysis of chitosan at 900 degrees C under Ar exhibits catalytic activity for the Sabatier hydrogenation of CO2 to CH4 at temperatures about 500 degrees C with estimated turnover frequencies and activation energy values of 73.17s(-1) and 24.3 kcal x mol(-1), respectively. It has been found that this enhanced catalytic activity compared to other related doped defective graphenes derives from the presence of pyridinic N atoms that adsorbs CO2 forming carbamate-type adsorbates.

引用

页码：985 / 990

页数：6

共 36 条

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[2]

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