活性炭和分子筛对甲醛、苯和甲苯吸附质的热脱附研究

采用顶空气相色谱仪对甲醛、苯和甲苯3种吸附质在活性炭和分子筛上的热脱附进行了研究。首先对气相色谱顶空进样法重现性进行了验证,并试验证明了柱箱温度对FID的检测与响应值没有影响。测定了甲醛、苯和甲苯的标准曲线,得到不同温度下活性炭和分子筛对甲醛、苯和甲苯的热脱附曲线。结果表明,活性炭在较低的温度下即可脱附大部分甲醛和甲苯,而苯在分子筛上更易于脱附。...

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Published in广东农业科学 Vol. 38; no. 4; pp. 139 - 140
Main Author 李文明 袁东 付大友 李红然 谭文渊
Format Journal Article
LanguageChinese
Published 四川理工学院材料与化学工程学院,四川自贡,643000 2011
Subjects
分子筛
吸附质
活性炭
热脱附
顶空气相色谱法
热脱附
顶空气相色谱法
吸附质
分子筛
活性炭
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Summary:采用顶空气相色谱仪对甲醛、苯和甲苯3种吸附质在活性炭和分子筛上的热脱附进行了研究。首先对气相色谱顶空进样法重现性进行了验证,并试验证明了柱箱温度对FID的检测与响应值没有影响。测定了甲醛、苯和甲苯的标准曲线,得到不同温度下活性炭和分子筛对甲醛、苯和甲苯的热脱附曲线。结果表明,活性炭在较低的温度下即可脱附大部分甲醛和甲苯,而苯在分子筛上更易于脱附。
Bibliography:44-1267/S
HSGC; activated carbon; zeolite; adsorbate; thermal desorption
LI Wen-ming,YUAN Dong,FU Da-you,LI Hong-ran,TAN Wen-yuan（Material and Chemical Engineering College,Sichuan University of Science and Engineering,Zigong 643000,China）
Thermal desorption of formaldehyde,benzene and toluene on activated carbon and zeolite was studied by HSGC in this article.First of all,the reproducibility of injection method of GC was validated.There was no influence on detection and response of FID by column temperature.The standard curve of formaldehyde,benzene and toluene were wade.The curve of thermal desorption of formaldehyde,benzene and toluene on activated carbon and zeolite was gotten in different temperature.As a result,the most of formaldehyde and toluene on activated carbon was desorpted in lower temperature.However,benzene on zeolite was easier to desorpt.
ISSN:1004-874X
DOI:10.3969/j.issn.1004-874X.2011.04.053