A S-containing additive, sulfuration modified rapeseed oil （named as SRO）, was prepared by chemical modification of rapeseed oil with sulfur compounds. The results indicate that the friction and wear of the magnesiu...A S-containing additive, sulfuration modified rapeseed oil （named as SRO）, was prepared by chemical modification of rapeseed oil with sulfur compounds. The results indicate that the friction and wear of the magnesium alloy-steel tribomates could be effectively reduced by formulating SRO into rapeseed oil lubricant. The friction coefficients and the wear volumes of magnesium alloy decrease with increasing contents of SRO. The surface lubricated with SRO-doped rapeseed oil was characterized by less wear as compared with that lubricated with neat rapeseed oil. The enhanced anti-wear and friction-reducing abilities of rapeseed oil by SRO in the lubrication of magnesium alloy against steel were ascribed to the formation of a composite boundary lubrication film due to the strong adsorption of SRO and rapeseed oil onto the lubricated surfaces and their tribochemical reactions with magnesium alloy.展开更多
分别将硫、二甲硫醚和乙二硫醇3种含硫物添加到制备的咪唑基氯铝酸盐离子液体[BMIM]Cln Al Cl3(n=1、1.5、2和2.5)中,制备了含硫物改性的咪唑基氯铝酸盐离子液体。合成的催化剂在甲苯选择性氯化反应中有较高的催化活性和对氯甲苯选择性...分别将硫、二甲硫醚和乙二硫醇3种含硫物添加到制备的咪唑基氯铝酸盐离子液体[BMIM]Cln Al Cl3(n=1、1.5、2和2.5)中,制备了含硫物改性的咪唑基氯铝酸盐离子液体。合成的催化剂在甲苯选择性氯化反应中有较高的催化活性和对氯甲苯选择性。当以乙二硫醇改性的[BMIM]Cl-2Al Cl3离子液体为催化剂,催化剂用量为甲苯质量的3%,在70℃下反应8 h时,甲苯完全转化,对氯甲苯的选择性为70.4%;该催化剂易于与氯化产物分离,具有良好的稳定性和循环性能。展开更多
基金Project (50975282) supported by the National Natural Science Foundation of China
文摘A S-containing additive, sulfuration modified rapeseed oil （named as SRO）, was prepared by chemical modification of rapeseed oil with sulfur compounds. The results indicate that the friction and wear of the magnesium alloy-steel tribomates could be effectively reduced by formulating SRO into rapeseed oil lubricant. The friction coefficients and the wear volumes of magnesium alloy decrease with increasing contents of SRO. The surface lubricated with SRO-doped rapeseed oil was characterized by less wear as compared with that lubricated with neat rapeseed oil. The enhanced anti-wear and friction-reducing abilities of rapeseed oil by SRO in the lubrication of magnesium alloy against steel were ascribed to the formation of a composite boundary lubrication film due to the strong adsorption of SRO and rapeseed oil onto the lubricated surfaces and their tribochemical reactions with magnesium alloy.
文摘分别将硫、二甲硫醚和乙二硫醇3种含硫物添加到制备的咪唑基氯铝酸盐离子液体[BMIM]Cln Al Cl3(n=1、1.5、2和2.5)中,制备了含硫物改性的咪唑基氯铝酸盐离子液体。合成的催化剂在甲苯选择性氯化反应中有较高的催化活性和对氯甲苯选择性。当以乙二硫醇改性的[BMIM]Cl-2Al Cl3离子液体为催化剂,催化剂用量为甲苯质量的3%,在70℃下反应8 h时,甲苯完全转化,对氯甲苯的选择性为70.4%;该催化剂易于与氯化产物分离,具有良好的稳定性和循环性能。
