铁基准均相催化剂的制备及其在煤直接液化中的应用

Preparation of pseudohomogeneous catalyst and its application in coal direct liquefaction

以四氢萘为油相,Span80和Tween80为表面活性剂,正丁醇为助表面活性剂,分别制备出Fe SO4W/O型微乳液和Na2SW/O型微乳液。将2种微乳液按n(Fe)∶n(S)=1∶1.2混合,一定条件下制备出铁基准均相催化剂。XRD表征结果:液化反应前催化剂粒子为Fe S,液化反应后催化剂粒子为F1-xS。TEM表征结果:催化剂粒子为类球形颗粒,平均粒径小于100 nm。以新疆西沟煤为对象进行直接液化实验,在该催化体系下油产率达71.75%,高于相同液化条件下商用Fe2O3催化剂油产率的4.42%。

The FeSO4 W/O microemulsion and Na2S W/O microemulsion are prepared separately by using tetrahydronaphthalene as oil phase, Span80 and Tween80 as surfactant, n-butyl alcohol as co-surfactant. Two microemulsion are mixed with a molar ratio of n（Fe） ： n（S） = 1 ： 1.2 to prepare iron base pseudohomogeneous catalysts under certain conditions. XRD result indicates that the compositions of catalyst particles are FeS and F1-xS before and after liquefaction, respectively. TEM results exhibits that the morphology of catalyst particles is similar to spherical particles, and the average particle size is less than 100 nm. When Xinjiang XIGOU coal is applied as objects to direct coal liquefaction experiments, in the pseudohomogeneous catalytic system, the oil yield is 71.75 %, which is 4.42% higher than the oil catalyzed by commercial Fe2O3 catalyst under the same conditions.