Synthesis of SAPO-34 catalysts via sonochemically prepared method and its catalytic performance in methanol conversion to light olefins

IF 0.125
Rana Ahmadova, Hikmet Ibragimov, Evgenii Kondratenko, Uwe Rodemerc
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引用次数: 6

Abstract

Methanol-to-olefin (MTO) reaction was investigated over sonochemically (SAPO-34-U40, SAPO-34-U70, SAPO-34-U100) and hydrothermally (SAPO-34-HT) prepared nanocatalysts. The catalytic performance of prepared samples was investigated over all samples at 450?°C and over SAPO-34-U40 at 350–450?°C temperature range. The higher yield ~?97?wt% (31.4?wt% C2=, 49.4?wt% C3= and 16.1?wt% sumC4=) of light olefins was obtained at 375?°C on SAPO-34-U40. Physico-chemical properties of catalysts were characterized by XRD, SEM, BET, ICP techniques. XRD analysis showed suitable crystalline structure and SEM images confirmed perfect crystallinity of sonochemically prepared samples. BET analysis indicated remarkable surface area of SAPO-34-U40. The amount of carbon deposits and character of coke was determined by TPO analysis. The higher amount of coke was determined over SAPO-34-HT in comparison to another’s at 450?°C. The character of coke deposited over SAPO-34-U40 was similar for 375–425?°C temperatures.

Abstract Image

声化学法制备SAPO-34催化剂及其在甲醇转化为轻烯烃中的催化性能
采用声化学(SAPO-34-U40、SAPO-34-U70、SAPO-34-U100)和水热(SAPO-34-HT)制备纳米催化剂,对甲醇制烯烃(MTO)反应进行了研究。对制备的样品在450℃下的催化性能进行了研究。SAPO-34-U40在350-450 ?温度范围°C。较高的产率~ 97?(31.4 wt %吗?wt% C2=, 49.4?wt% C3=和16.1?轻质烯烃的wt% sumC4=)SAPO-34-U40上的°C。采用XRD、SEM、BET、ICP等技术对催化剂的理化性质进行了表征。XRD分析表明,超声化学制备的样品具有良好的晶体结构,SEM图像证实了样品的结晶度。BET分析表明SAPO-34-U40的表面积显著。用TPO法测定了焦炭的积碳量和性质。在450°C的温度下,SAPO-34-HT的焦炭量比其他的要高。在SAPO-34-U40上沉积的焦炭在375-425 ?°C的温度。
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来源期刊
Applied Petrochemical Research
Applied Petrochemical Research ENGINEERING, CHEMICAL-
自引率
0.00%
发文量
0
审稿时长
13 weeks
期刊介绍: Applied Petrochemical Research is a quarterly Open Access journal supported by King Abdulaziz City for Science and Technology and all the manuscripts are single-blind peer-reviewed for scientific quality and acceptance. The article-processing charge (APC) for all authors is covered by KACST. Publication of original applied research on all aspects of the petrochemical industry focusing on new and smart technologies that allow the production of value-added end products in a cost-effective way. Topics of interest include: • Review of Petrochemical Processes • Reaction Engineering • Design • Catalysis • Pilot Plant and Production Studies • Synthesis As Applied to any of the following aspects of Petrochemical Research: -Feedstock Petrochemicals: Ethylene Production, Propylene Production, Butylene Production, Aromatics Production (Benzene, Toluene, Xylene etc...), Oxygenate Production (Methanol, Ethanol, Propanol etc…), Paraffins and Waxes. -Petrochemical Refining Processes: Cracking (Steam Cracking, Hydrocracking, Fluid Catalytic Cracking), Reforming and Aromatisation, Isomerisation Processes, Dimerization and Polymerization, Aromatic Alkylation, Oxidation Processes, Hydrogenation and Dehydrogenation. -Products: Polymers and Plastics, Lubricants, Speciality and Fine Chemicals (Adhesives, Fragrances, Flavours etc...), Fibres, Pharmaceuticals.
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