IRON OXIDE AND Fe2O3/Al2O3 USED TO CATALYZE REMOVING HYDROGEN FROM TAIL CHLORINE AT LOW TEMPERATURE

Abstract

Recebido em 29/07/2018; aceito em 14/01/2019; publicado na web em 27/02/2019 The transition metal oxide, such as iron oxide and Fe 2 O 3 /Al 2 O 3 is cheap and industrialized that are widely used to catalyze the reaction of chlorine and oxygen with hydrogen in mixture gas to remove hydrogen from tail chlorine at low temperature. The reaction gas was prepared by the same composition with industrial tail chlorine, namely Cl 2 (65% ~ 80%), O 2 (8% ~ 10%), N 2 (6% ~16%) and H 2 (1.5% ~ 4%). In this experiment, the fixed bed reactor and iron oxide or Fe 2 O 3 /Al 2 O 3 were used as the reaction device and catalysts, respectively. The optimum conversion rate of hydrogen was 84.11% when the reaction temperature was at 70 °C with 3%wt. Fe 2 O 3 / Al 2 O 3 and the calcination temperature was 500 °C. The results showed that the catalytic performance of Fe 2 O 3 /Al 2 O 3 is superior to Fe 2 O 3. The selectivity of the reaction of hydrogen and chloride was higher than that of hydrogen and oxygen. We also characterized the catalysts with XRD, XPS, SEM and N 2 adsorption-desorption and the results showed that the iron oxide was dispersive uniformly on the support surface.

Icephobic Coating through a Self-Formed Superhydrophobic Surface Using a Polymer and Microsized Particles

“…When ice forms on the SS surface, the polar metal oxide functional groups increase the electrostatic interactions between ice and the surface, resulting in higher ice adhesion strength. , Polar metal oxide bonding on the SS surface is confirmed by XPS (Figure S5 of the Supporting Information). − For PDMS/SS, the electrically nonpolar CH 3 ligand has less electrostatic interaction with ice, and thus, the ice adhesion strength is reduced . In addition, the ice adhesion strength of SiO 2 /PDMS/SS is further reduced owing to the decrease in the contact area.…”

Using Graphene Oxide Based Materials for Thermal Sorption

“…Kết quả nhiễu xạ tia X của Al2O3/GO ở Hình 3 cho thấy việc đưa Al2O3 đã làm cho đỉnh nhiễu xạ đặc trưng của GO ở góc 2θ=11,2 o giảm đi, thay vào đó là sự xuất hiện các đỉnh mới ở giá trị 2θ tương ứng là 37,1 o ; 45,6 o và 67,1 o phù hợp với dữ liệu nhiễu xạ tia X của γ-Al2O3. Điều này thể hiện cho sự tổ hợp γ -Al2O3 lên bề mặt GO [19]. [18,20].…”

Cobaltosic Oxide Catalysts for Catalytically Removing Hydrogen from Tail Chlorine

“…This method can not only achieve dehydrogenation effect, but also prepare ferric chloride products. 18 In this article, the cobalt-based catalyst was prepared by using high specific surface area ZSM-5 as supporter. ZSM-5 zeolite has lot of advantages such as thermal stability, unique channel structure, large surface, acidity and shape-selectivity.…”