首页期刊信息编委及顾问期刊发行联系方式使用帮助常见问题ENGLISH
位置:首页 >> 正文
掺杂金属离子对铁的有机物热解产物的影响及其机理
作者:吴东辉 施新宇 汪信 
单位:南京理工大学材料化学研究室 南通工学院化工系 南京理工大学材料化学研究室 南京210094南通工学院化工系 江苏南通226007  江苏南通226007  南京210094 
关键词:三氧化二铁  热解  稳定作用  机理 
分类号:TB34
出版年,卷(期):页码:2005,33(4):428-432
DOI:
摘要:
系统研究了掺杂金属离子对硬脂酸铁热解产物的影响。结果显示:影响热解产物的因素不仅与掺杂离子的半径有关,而且还与其离子的电荷及电子构型有关,即掺杂离子极化力的大小决定热解产物的种类。当掺杂离子的极化力较小时,其对应的硬脂酸盐热解形成的碳酸盐能稳定存在,从而有利于生成γFe2O3;反之则有利于生成αFe2O3。通过实验还发现:运用该观点同样可以很好地解释掺杂金属离子对其它铁的有机物热解产物的影响,提出对γFe2O3起稳定作用的主要原因可能在于掺杂金属离子有机物热解形成的、处于γFe2O3晶体表面的CO32-。
how to cheat signs of a cheater wife cheat story
why women cheat on husbands online link
online women that cheat with married men married woman looking to cheat
redirect husband cheated unfaithful husband
read cheat on husband signs of infidelity
my wife cheated on me now what i dream my husband cheated on me husband cheat
printable coupons for cialis outbackuav.com coupon for free cialis
sumatriptan side effects sumatriptan side effects sumatriptan side effects
Effects of doping metal ions on the pyrolysis product of ferric stearin acid were systematically studied. Results show that it is not only the doping ionic radius, but also ionic electric charge and electron configuration which affect the pyrolysis product. In other words, doping ionic polarizing power determines the type of pyrolysis product. When the doping ionic polarizing power is lower, the carbonate formed corresponding by pyrolysis of doping ion stearin acid salt is stable and it is favorable to form γFe_2O_(3), whereas when the polarizing power is higher, it is favorable to form αFe_2O_(3). The influence of doping metal ions on the pyrolysis products of other ferric organic compounds is also explained perfectly by this opinion. It is proposed that carbonate on the surface of γFe_2O_(3) crystal formed by pyrolysis of doping ion organic compounds is the main reason for stabilizing γFe_2O_(3).
women want men how to cheat how do i know if my wife cheated
redirect go why women cheat on men they love
how to catch a cheater redirect go
open open My husband cheated on me
基金项目:
江苏省自然科学基金(BK2002100)资助项目。
作者简介:
how do i know if my wife has cheated men having affairs read
why do wife cheat on husband why wifes cheat how to cheat wife
doxycycline doxycycline doxycycline
参考文献:
[1] RAHMAN M M,MUKHEDKR V A,VENKATARAMANA, et al.Studies on the formation ofγFe2O3 by thermaldecomposition of ferrous malonate dihydrate[J].Thermo chimicaActa,1988,125:173—190. [2] 刘静波,王智民,谷林夫,等.络合物型溶胶凝胶过程研制纳米晶γFe2O3磁粉[J].功能材料,1998,29(2):144—147.LIU Jingbo,WANG Zhimin,GU Linfu, et al.J FunctMa ter(inChinese),1998,29(2):144—147. [3] DEL MONTE F,MORALES M P,LEVY D, et al.Forma tion ofγFe2O3 isolated nanoparticles in a silica matrix[J].Langmuir,1997,13:3627—3634. [4] LUO H M,ZHENG H X.Effects of doping on the thermalstability of spindle shapedγFe2O3 particles[J].ThermalAnal,1995,45:185—191. [5]SARDA Ch,ROUSSET A.Thermal stability of barium doped iron oxides with spinel structure[J].ThermochimicaActa,1993,222:21—31. [6] GILLOT B,BENLOUCIF R M.A study of infrared absorp tion in the oxidation of zinc substituted magnetites to defectphaseγand hematite[J].J SolidStateChem,1981,39:329—336. [7] 曾桓兴,罗红梅,张天舒,等.高稳定性的γFe2O3的合成及气敏性能研究[J].功能材料,1995,26(4):305—308.ZHENG Huanxing,LUO Hongmei,ZHANG Tianshu,et al.J FunctMater(inChinese),1995,26(4):305—308. [8] 吴东辉,李 丹,杨 娟,等.硬脂酸法制备SO42-/Fe2O3SiO2固体酸及其催化性能的初步探讨[J].高等学校化学学报,2001,22(11):1877—1880.WU Donghui,LI Dan,YANG Juan, et al.ChemJ ChinUniv(inChinese),2001,22(11):1877—1880. [9] 吴东辉,李 丹,杨 娟,等.Na2CO3对超细Fe2O3微晶结构的控制作用[J].功能材料,2001,32(4):413—414.WU Donghui,LI Dan,YANG Juan, et al.J FunctMater(inChinese),2001,32(4):413—414. [10] 赵文俞,张清杰,李 鹏,等.柠檬酸法合成SrFe12O19磁铅石型铁氧体的晶体过程研究[J].硅酸盐学报,2003,31(1):20—24.ZHAO Wenyu,ZHANG Qingjie,LI Peng, et al.J ChinCe ramSoc(inChinese),2003,31(1):20—24. [11] 傅献彩.大学化学[M].北京:高等教育出版社,1999.550—598.FU Xiancai.CollegeChemistry(inChinese).Beijing:HigherEducationPress,1999.550—598. [12] ARATA K.Preparation of superacids by metal oxides for re action of butanes and pentanes[J].ApplCatal,1996,146:3—32.
abortion pill abortion pill abortion pill
服务与反馈:
文章下载】【加入收藏
中国硅酸盐学会《硅酸盐学报》编辑室
京ICP备10016537号-2
京公网安备 11010802024188号
地址:北京市海淀区三里河路11号    邮政编码:100831
电话:010-57811253  57811254    
E-mail:jccs@ceramsoc.com