摘要
以Mo改性的Rh/AC(Rh-MoOx/AC)为催化剂,研究了四氢糠醇加氢开环制备1,5-戊二醇的催化性能。采用TEM、XPS和NH3吸附热量表征催化剂,并考察了反应工艺条件。表征结果表明,低价态Mo所提供的中等强度的酸中心是加入Mo可提高催化剂活性的主要原因。催化反应结果表明:以水为溶剂,以nMo/nRh=0.15的Rh-MoOx/AC为催化剂,还原温度为550℃,反应温度为120℃,反应压力为8 MPa,反应时间为10 h,四氢糠醇的转化率为64%,1,5-戊二醇的选择性为100%。
Selective hydrogenolysis of tetrahydrofurfuryl alcohol to 1,5-pentanediol was investigated over Mo modified Rh/AC （Rh-MoOx/AC） catalysts. The Rh-MoOx/AC catalysts were characterized by TEM, XPS and microcalorimetry of NH3 adsorption. The reaction conditions of the hydrogenolysis were optimized. The results show that the medium strength acid site, provided by MoOx with lower oxidation state by doping molybdenum, is the main factor for improving the catalytic activity. The optimized reaction conditions are catalyst-Rh-MoOx/AC with molar ratio nMo/nRh of 0.15, reduction temperature of 550℃, reaction temperature of 120 ℃, reaction pressure of 8 MPa, reaction time of 10 h and using water as the solvent,. Under these conditions, 64% conversion of tetrahydrofurfuryl alcohol with selectivity of almost 100% toward 1,5-pentanediol is obtained.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2015年第2期297-302,共6页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金(No.21307009)
江苏高校优势学科建设工程项目
江苏省高校自然科学基础研究项目(No.12KJB530001)资助项目
