Adsorptive Desulfurization of Iraqi Heavy Naphtha Using Different Metals over Nano Y Zeolite on Carbon Nanotube

Abstract

The present research was conducted to reduce the sulfur content of Iraqi heavy naphtha by adsorption using different metals oxides over Y-Zeolite. The Y-Zeolite was synthesized by a sol-gel technique. The average size of zeolite was 92.39 nm, surface area 558 m 2 /g, and pore volume 0.231 cm 3 /g. The metals of nickel, zinc, and copper were dispersed by an impregnation method to prepare Ni/HY, Zn/HY, Cu/HY, and Ni + Zn /HY catalysts for desulfurization. The adsorptive desulfurization was carried out in a batch mode at different operating conditions such as mixing time (10,15,30,60, and 600 min) and catalyst dosage (0.2,0.4,0.6,0.8,1, and 1.2 g). The most of the sulfur compounds were removed at 10 min for all catalyst types. The maximum sulfur removal was 56% using (Ni+Zn)/HY catalyst at 1.2 g dose for 24 h. The adsorption kinetics and isotherm of sulfur removal were studied, and results indicated that desulfurization adsorption kinetic was 2 nd order, and Temkin and Freundlich models were the best representation isotherm.

Adsorptive Desulfurization of Iraqi Light Naphtha Using Calcite and Modified Calcite

“…The profile of isotherm provides information about the stability of the interaction and on adsorption convergence of molecules. Some of these adsorption isotherms may be characterized in many mathematical forms which are based on the streamlined physical behavior of adsorption, whereas the others are empirical and correlated experimental results [21], [22]. The Langmuir and Freundlich isotherm were verified for batch results in which the Langmuir and Freundlich models are used to explain adsorption for equilibrium.…”

Oxidative Desulfurization of Simulated Diesel Fuel by Synthesized Tin Oxide Nano-Catalysts Support on Reduced Graphene Oxide

“…9C, by increasing the catalyst dosage from 0.02 to 0.04 g, the DBT conversion was improved. With increasing catalyst dosage after 0.04 g, the DBT removal was decreased due to catalyst aggregation [19,20].…”

المقارنة بين الأكسدة بتقنية البلازما الباردة والدمج بين تقنية البلازما مع بيروكسيد الهيدروجين للمركبات الكبريتية العضوية

“…Using a variety of procedures, including hydrodesulfurization 7,8 . Oxidative desulfurization, bio-desulfurization 9 , deep eutectic solvent extraction, and adsorptive desulfurization 10 , desulfurization processes have been carefully studied 11 . Among the methods researched, oxidative desulfurization procedures are regarded as one of the most promising ways for desulfurization because of properties such as ease of processing and high desulfurization effectiveness, 12 .…”