摘要
采用柠檬酸法制备了SnO2纳米材料，并采用差热-热重、X射线衍射、透射电子显微镜和氮吸附等技术对其进行了表征，考察了其在丙烯醛还原制烯丙醇反应中的催化性能．结果显示，制备的SnO2纳米材料粒径（尺寸为8～10nm）均一，并具有多孔性质（孔径4～6nm）；在丙烯醛还原制烯丙醇反应中具有良好的催化性能，催化剂的初始活性很高，丙烯醛的初始转化率可达93．6％，烯丙醇的最高选择性为60％，烯丙醇的最高收率为47％．表面结焦是造成催化剂失活的主要原因．
A SnO2 nano-material was synthesized by the citric method and was characterized by thermogravimetry-differential thermal analysis, X-ray diffraction, transmission electron microscope, and N2 adsorption techniques. The SnO2 obtained is nano-crystalline with uniform particle size （8- 10 nm） and porous structure （pore diameter 4 - 6 nm）. The SnO2 nano-material displayed good catalytic performance for the reduction of acrolein to allyl alcohol. The catalyst had high initial activity, and the initial conversion of acrolein reached 93.6 %. The highest selectivity and yield of allyl alcohol were 60 % and 47 %, respectively. Coke deposition on the catalyst surface mainly contributed to its deactivation.
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
2006年第12期1087-1090,共4页
关键词
纳米材料
氧化锡
丙烯醛
还原
烯丙醇
nano-material
tin oxide
acrolein
reduction
allyl alcohol
