摘要
采用一步合成法制备了以甘氨酸为阳离子、磷钨酸为阴离子的功能化杂多酸盐[Gly]_3PW_(12)O_(40)。以[Gly]_3PW_(12)O_(40)为催化剂,以离子液体[Hmim]PF6、[Hmim]BF4、[Bmim]PF6、[Bmim]BF4分别为萃取剂,以过氧化氢为氧化剂,构建了杂多酸盐耦合离子液体的催化氧化脱硫体系。研究表明,以[Hmim]PF6为萃取剂可以获得最佳的脱硫效果。采用单因素实验研究了脱硫工艺条件对[Gly]_3PW_(12)O_(40)/[Hmim]PF6/H2O2体系脱硫效果的影响。结果表明,在n(过氧化氢)/n(硫)=4、反应时间为90 min、反应温度为60℃、n[Gly]_3PW_(12)O_(40)/n(硫)=0.025、[Hmim]PF6用量为1 m L条件下,燃料油的脱硫率可达99.2%,并且脱硫体系[Gly]_3PW_(12)O_(40)/[Hmim]PF6具有很好的重复使用性能。
Functionalized Heteropoly salts[Gly]_3PW_（12）O_（40） was synthesized with glycine as the cation and phosphotungstic acid as the anion by one step method.A catalytic oxidative desulfurization system based on heteropoly acid salt coupled ionic liquids was constructed with [Gly]_3PW_（12）O_（40） as catalyst,ionic liquid [Hmim]PF6, [Hmim]BF4, [Bmim]PF6 and [Bmim]BF4 used as extractants respectively,and H_2O_2 as oxidant.Research showed that the best sulfur removal can be obtained by using ionic liquid [Hmim]PF6 as extractant.The effects of conditions on the sulfur removal of the system [Gly]_3PW_（12）O_（40）/[Hmim]PF6/H_2O_2 were investigated.The results showed that the sulfur removal could be 99.2% under the conditions n（H_2O_2）/n（S）=4,reaction time was 90 min,reaction temperature was 60 ℃,n（[Gly]_3PW_（12）O_（40））/n（S）=0.025 and V（[Hmim]PF6）=1 m L,and the system[Gly]_3PW_（12）O_（40）/[Hmim]PF6 exhibited good reuse performance.
作者
王淑波
敖红伟
冯树波
Wang Shubo1;Ao Hongwei1;Feng Shubo 2(1 .School of Petrochemical Engineering, Bayingol Vocational and Technology College, Korla 841001, China; 2.College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technolog)
出处
《无机盐工业》
CAS
北大核心
2018年第6期91-94,共4页
Inorganic Chemicals Industry
关键词
功能化杂多酸盐
氨基酸
离子液体
催化氧化脱硫
functionalized heteropoly salts
amino acids
ionic liquid
catalytic oxidation desulfurization
