微波溶胶-凝胶法合成Co, Ni, Cu, Mn铁氧体及其在一氧化碳氧化反应中的活性İnvestigation

IF 0.9 Q4 CHEMISTRY, MULTIDISCIPLINARY
Zulfugarova Sima Mamed, Azimova Gunel Ramiz, Aleskerova Zuleyxa Fikret, Ismailov Etibar Humbat, Litvishkov Yuriy Nikolayevich, Tagiyev Dilqam Babir
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引用次数: 1

摘要

研究了微波辐射对陶瓷法和溶胶-凝胶法合成的过渡金属铁氧体在一氧化碳氧化成二氧化碳反应中的催化性能的影响。本工作的目的是研究微波辐射对使用各种有机试剂通过溶胶-凝胶燃烧技术生产钴、铜、镍和锰铁氧体的影响,并研究它们在一氧化碳氧化转化为二氧化碳方面的催化活性。微波处理是在基于EM-G5593V微波炉(Panasonic)的装置上进行的,该微波炉具有从300到800W变化的磁控管功率和2450MHz的操作频率。产物的X射线相位分析在Bruker D2Hazer自动衍射仪上进行。样品的比表面积的测量是通过SORBI-MS仪器(ZAO META,Russia)上的多点BET法通过低温氮吸附测定的。使用FT-IR LUMOS Bruker光谱仪记录IR光谱。样品的显微照片在Sigma VP(Carl Zeiss Jena)设备上进行分析。已经确定,将一氧化碳氧化为二氧化碳的最具活性的催化剂是通过溶胶-凝胶燃烧方法获得的铁氧体,该方法使用微波辐射“点燃”凝胶。在通过溶胶-凝胶法燃烧制备铁氧体的过程中使用微波辐射,可以在很短的时间内(以秒为单位)在样品的整个体积中引发自蔓延放热燃烧反应。通过这种铁氧体方法获得的一氧化碳氧化转化的催化活性与通过传统燃烧的溶胶-凝胶方法获得的铁氧体的活性相当。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Microwave Sol-Gel Synthesis of Co, Ni, Cu, Mn Ferrites and İnvestigation of Their Activity in the Oxidation Reaction of Carbon Monoxide
The study effect of microwave radiation on the catalytic properties of transition metal ferrites synthesized by ceramic and sol-gel methods, in the oxidation reaction of carbon monoxide into dioxide. The aim of this work is to study the effect of microwave radiation on the production of cobalt, copper, nickel and manganese ferrites by sol-gel combustion technology using various organic reagents and to study their catalytic activity in the oxidative conversion of carbon monoxide into dioxide. Microwave treatment was carried out on a setup based on an EM-G5593V microwave oven (Panasonic) with a magnetron power varying from 300 to 800 W with an operating frequency of 2450 MHz. X-ray phase analysis of the products was carried out on a Bruker D 2Phazer automatic diffractometer. The measurement of the specific surface area of the samples was determined by low-temperature nitrogen adsorption by the multipoint BET method on a SORBI-MS instrument (ZAO META, Russia). IR spectra were recorded using FT-IR LUMOS Bruker spectrometers. The micrographs of samples were analyzed on the Sigma VP (Carl Zeiss Jena) equipment. It was determined that the most active catalysts for the oxidation of carbon monoxide to dioxide are ferrites obtained by the sol-gel combustion method using microwave radiation to "ignite" the gel. The use of microwave radiation in the preparation of ferrites by the sol-gel method with combustion can, in a very short time, measured in seconds, initiate a self-propagating exothermic combustion reaction in the entire volume of the sample. The catalytic activity in the oxidative conversion of carbon monoxide obtained by this method of ferrites comparable to the activity of ferrites obtained by the sol-gel method with traditional combustion.
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来源期刊
Current Microwave Chemistry
Current Microwave Chemistry CHEMISTRY, MULTIDISCIPLINARY-
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