无机材料学报2025，Vol.40Issue(5)：473-480,中插1-中插2,10.DOI:10.15541/jim20240445
基于Cu与金属氧化物-KCl熔融介质的甲烷热解制备少层石墨烯与氢气联产研究
Co-production of Few-layer Graphene and Hydrogen from Methane Pyrolysis Based on Cu and Metal Oxide-KCl Molten Medium
摘要
Abstract
Methane pyrolysis is a technology that utilizes fossil energy to produce high added value carbon materials and hydrogen.However,traditional methods,such as chemical vapor deposition(CVD)and molten metal catalysis,face challenges in the production of graphene,including catalyst deactivation,difficulty in separating graphene from the catalyst,and high reaction temperatures(≥1100℃),which limit their industrial applications.This study proposes an innovative approach to produce graphene by catalyzing methane pyrolysis using Cu and metal oxides-KCl molten medium.By adding metal oxides(Al2O3,TiO2,ZrO2,MgO,SiO2)as dispersants,the dispersion of active Cu sites is enhanced.Notably,Cu/ZrO2 with a Cu content of 50%(in volume)and Cu/MgO with a Cu content of 75%(in volume)catalysts enable the efficient production of few-layer graphene.Cu/ZrO2 catalyst with a Cu content of 50%(in volume)exhibits the highest activity,achieving a methane conversion rate of 22%,a hydrogen production yield of 21.5 mmol/h,and formation of large-area and smooth few-layer graphene.This study provides a new technical route for co-production of graphene and hydrogen via methane pyrolysis,offering potential for large-scale graphene production in the future.关键词
甲烷热解/熔融介质/少层石墨烯/氢气/铜/金属氧化物Key words
methane pyrolysis/molten medium/few-layer graphene/hydrogen/copper/metal oxide分类
化学引用本文复制引用
杨茗凯,周莹,黄泽皑,周芸霄,刘彤,张魁魁,谭浩,刘梦颖,詹俊杰,陈国星..基于Cu与金属氧化物-KCl熔融介质的甲烷热解制备少层石墨烯与氢气联产研究[J].无机材料学报,2025,40(5):473-480,中插1-中插2,10.基金项目
国家自然科学基金杰出青年基金(52325401) （52325401）
四川省重点研发项目(2023YFG0106)National Natural Science Fund for Distinguished Young Scholars of China(52325401) （2023YFG0106）
Key Research and Development Project of Sichuan Province(2023YFG0106) （2023YFG0106）
