汽油脱硫

Abstract(#br)Inspired by the silica formation process mediated by silica deposition vesicle (SDV) in diatoms or sponges, silica nanoparticles (SiO 2 ) were in-situ formed within oleophilic polydimethylsiloxane (PDMS) bulk matrix through the controlled biomimetic mineralization in confined space, using either NH 3 or cysteamine as inducer/catalyst. Accordingly, different kinds of PDMS-SiO 2 nanocomposite membranes were fabricated.

Abstract(#br)In recent years, pervaporation has been investigated rigorously for separation of thiophene and its derivatives from the fluid catalytic cracker (FCC) gasoline. Like other membrane-based processes, the scale up and commercialization of this process require the study of the separation performance at the membrane module scale. In this study, a suitable mathematical model is obtained to predict the performance of a spiral wound pervaporative module for the removal of thiophene from n -heptane/thiophene mixtures.

Abstract(#br)In last decade, pervaporation has been recognized as a promising novel process for desulfurization of FCC (Fluidized Catalytic Cracking) gasoline. This study deals with the comparison of the removal of different types of sulfur containing species by a spiral wound pervaporation module. For this, different binary systems containing 2-methyl thiophene, 1-butanethiol and diethyl sulfide as solute and n -heptane as solvent are selected as model gasoline. Results reported in our previous study on n -heptane/thiophene systems are also included in the analysis.