摘要
研究了纳米水滑石负载含铜过渡金属催化剂和普通水滑石类催化剂催化苯酚羟基化反应 ,考察了不同过渡金属氧化物对Cu/纳米水滑石催化活性的影响。结果表明以纳米水滑石为载体的催化剂活性高 ,添加过渡金属Fe、Ni、Zn使催化剂活性提高 ,而Co降低了催化剂的活性。对负载型纳米水滑石Cu -Fe -HT(1∶1∶1)在 6 0 0℃下焙烧 1h ,苯酚 /双氧水 (摩尔比 )为 2 ,反应时间 2h ,苯酚 /催化剂(质量比 )为 10 0时催化苯酚羟基化反应 ,苯酚的转化率为 32 .89% ,双氧水的有效利用率为 6 5 .78%。
The phenol hydroxylation reaction on the catalysts of copper-transition metal oxides supported on nano-hydrotalcite(Cu/nano-HT), in comparison with the common hydrotalcite catalysts (Cu/HT) has been researched. The influence of adding different transition metal oxides in Cu/nano-HT on the catalytic activity was also investigated. The results showed that the activity of nano-hydrotalcite catalyst was better than that of the Cu/HT catalyst, and the catalytic activity of Cu/nano-HT increased by the addition of Fe, Ni and Zn, but decreased by the addition of Co. The phenol conversion and effective utilization rate of H 2O 2 reached 32.89% and 65.78% respectively, when the molar ratio of phenol/H 2O 2 being 2, the amount ratio of phenol/catalyst 100, and on the condition of catalyst Cu-Fe-HT(1:1:1) calcined at 600℃ for 1h, reaction time 2h.
出处
《石油与天然气化工》
CAS
CSCD
北大核心
2004年第4期228-230,共3页
Chemical engineering of oil & gas
