摘要
为开发绿色无污染、经济性能优良的炔化催化剂,采用共沉淀法制备一种新型的Cu OFe O/Si O2-Mg O催化剂,采用电感耦合等离子体发射光谱仪、低温N2物理吸附-脱附、X射线衍射、H2程序升温还原对催化剂组成、结构及织构进行表征,研究Fe助剂对Cu O/Si O2-Mg O催化剂结构及炔化性能的影响。结果表明,与催化剂Cu O/Si O2-Mg O相比,Fe O的引入使催化剂中Cu O的可还原性提高,在反应过程中Cu O更易生成活性物种Cu+的炔化物,Cu O-Fe O/Si O2-Mg O催化剂表现出较高的甲醛乙炔化性能。
In order to develop a kind of acetylene catalyst with green, no pollution, lower cost and excellent performance, a novel CuO-FeO/SiO2-MgO catalyst was prepared via eoprecipitation method. The composition, structure and texture properties of the catalyst were characterized by means of inductively coupled plasma-atomic emission spectroscopy, N2 absorption-desorption,X-ray diffraction and H2 temperature- programmed reduction methods. The effect of iron promoter on the structure and catalytic performance of CuO/SiO2-MgO catalyst for formaldehyde ethynylation was investigated. The results showed that compared with CuO/SiO2-MgO catalyst, the introduction of FeO improved the reducibility of CuO in CuO-FeO/ SiO2-MgO catalyst, making Cu^2＋ species be easily converted to Cu ＋ alkyne compound during the reaction. CuO-FeO/SiO2-MgO catalyst exhibited good performance for formaldehyde ethynylation.
出处
《工业催化》
CAS
2015年第6期455-458,共4页
Industrial Catalysis
基金
国家国际科技合作(2013DFA40460)
高等学校博士学科点专项科研基金(20131401120005)
山西省自然科学基金(2013011010-5)
山西省科技攻关计划(20140321013-02)
