文献类型：期刊文献

中文题名：催化剂对煤着火特性的影响——Ⅱ.不同催化剂对煤催化着火的影响

英文题名：CATALYTIC IGNITION PROPERTY OF COAL Ⅱ. THE EFFECTS OF DIFFERENT CATALYSTS

作者：陈海峰[1];沙兴中[1];徐依青[1];杭月珍[1];高晋生[1];尹桂芳[2];倪献智[2];王泉清[2];白浚仁[2]

机构：[1]华东化工学院,上海200237;[2]山东矿业学院,济南250031

年份：1993

卷号：21

期号：2

起止页码：180

中文期刊名：燃料化学学报

外文期刊名：Journal of Fuel Chemistry and Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心1992】；CSCD:【CSCD2011_2012】；

基金：中国煤炭总公司煤炭科学基金

语种：中文

中文关键词：煤;温度;催化剂;催化;燃烧

外文关键词：coal, ignition temperature, catalytic reactivity, catalyst

摘要：通过测定煤的着火点研究了不同催化剂对大同烟煤和晋城无烟煤的催化着火的影响。结果表明,催化剂化学组成是决定催化作用大小的一个重要的因素,具有同一碱金属离子,不同阴离子的催化剂酸性越强,催化作用越弱,其催化活性顺序为OH^->CO_3^(2-)>Cl^->SO_4^(2-);具有同一阴离子,不同碱金属或碱土金属阳离子的催化作用可用“电子转移学说”来解释,其催化作用的大小,随相应的碱金属,碱土金属的第一电离能的减少而增加。
The effects of different catalysts on the ignition of Datong bituminous coal and Jincheng anthracite have been investigated by determining the ignition temperature of these coal. The chemical composition of the catalyst is a determining factor. Activity of catalysts with the same alkali cation but different anions decseases in the order of OH>CO_3~2>CI^-> SO_4~2-; for example, KOH shows a decrease of 94℃ while K_2SO_4 causes a decrease of 44℃ in ignition temperature. Catalysts with the same anion and different alkali or alkaline earth metal cations decrease activity in the order of Cs^+>K^+>Na^+>Ca^(2+). This can be explained by the 'electron transfer hypothesis.' Higher catalytic effect results from lower first ionisation energy of the metals. For example, Cu_2SO_4 causes a marked decrease of 92℃ in ignition temperature in comparison with a decrease of 23℃ caused by Na_2SO_4.