徐翔

Cobalt Carbide from Co-Mn Layered Double Hydroxide: Highly Efficient Catalyst for Toluene Pyrolysis

发布时间：2024-09-30

点击次数：

DOI码：10.1021/acs.energyfuels.9b04175

所属单位：中南大学

发表刊物：Energy and Fuels

关键字：Adsorption, Aromatic compounds, Hydrocarbons, Hydrogen, Inorganic compounds

摘要：The cobalt carbide (Co2C) innovatively prepared from Co-Mn layered double hydroxide (CoMn LDH) has been investigated and evaluated toward its alternative synthesis conditions and different catalytic performances. Along with various characterization techniques, the preparation basically contains four steps (synthesis of CoMn LDH, calcination, reduction, and crystallization) that transform CoMn LDH to CoMn spinel and then to Co2C. Catalyst evaluation toward toluene pyrolysis was conducted. The sample with Co2C exhibited almost 100% conversion rate of toluene, where the resulting hydrogen yield (∼1.8%) is 6 times more than that of the blank test by using silica sand (∼0.3%), realizing the full transfer of hydrogen element from toluene to hydrogen molecule. Furthermore, based on the textural analysis and density functional dispersion correction calculation, which theoretically explained the easy accessibility of toluene to the crystal surface of Co2C(001) with a relatively high adsorption energy (about -280 kJ mol-1), it suggested that Co2C may expand more extensive applications in the field of catalysis.

论文类型：期刊论文

卷号：34

期号：2

页面范围：2221 - 2229

ISSN号：08870624

是否译文：否

发表时间：2020-02-20

收录刊物：SCI

发布期刊链接：https://pubs.acs.org/doi/10.1021/acs.energyfuels.9b04175