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研究生:王文哲
研究生(外文):Wen - Che Wang
論文名稱:三氯乙烷在氧化鉻觸媒上之焚化
論文名稱(外文):Incineration of Trichloroethane on Chromium Oxide Catalyst
指導教授:劉端祺
指導教授(外文):Tuan - Chi Liu
學位類別:碩士
校院名稱:國立臺灣科技大學
系所名稱:化學工程研究所
學門:工程學門
學類:化學工程學類
論文種類:學術論文
論文出版年:1996
畢業學年度:84
語文別:中文
論文頁數:84
中文關鍵詞:三氯乙烷觸媒焚化
外文關鍵詞:TrichloroethaneCatalystIncineration
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本論文主要在探討以氧化鋁承載之氧化鉻金屬氧化物觸媒用於焚化三氯乙
烷之各項問題,在觸媒方面,主要在研究氧化鉻之最佳承載量以及製備時的
最佳鍛燒溫度.在焚化反應方面則探討三氯乙烷之分解機構.觸媒以臨濕含
浸法製備,而以表面積分析儀,化學分析電子能譜儀 X射線繞射分析儀,原
子光譜分析儀等儀器鑑定之.反應測試則於一大氣壓下以連續流動方式進
行.研究結果顯示,氧化鉻之最佳承載量為10wt%,製備之觸媒最適鍛燒溫度
為773K.三氯乙烷分解後的產物包括二氯乙烯,氯化氫,一氧化碳,二氧化碳
以及氯氣,其分佈受反應溫度及空間時間的影響.由空間時間與產物分佈的
關係分析,三氯乙烷先是分解成二氯乙烯及氯化氫,而後二氯乙烯再分解成
一氧化碳,部份之一氧化碳再與氧作用生成二氧化碳.氯化氫在低溫時即生
成.隨著溫度升高氯化氫會與氧反應產生氯氣.反應後,觸媒的氧化鉻有部
份流失,可能是氧化鉻與產物作用,形成具較高揮發性之物種而被帶離擔體
之故,氧化鉻的流失是造成觸媒失活的主要原因.

The decomposition of trichloroethane on chromium oxide cataly
-st was investigated.The major interest was plead in finding
the maximum chromium oxide loading,the optimal calcination
temperatur -e and the mechanism trichloroethane reaction.
Catalyat were prepared by inncipient impregnation and were
charactreized by BET,ESCA,XRD,AA.The decomposition reaction was
conducted under atmospheric pressure with a continuous
trichloro ethane flow. The maximum loading was found to be
10wt% with an optimal calcinating temperature to be 773K.The
raection products were ethylene dichloroide,hydrochloric acid,
chlorine,carbon monoxide, carbon dioxide.The distribution of
the products was affect by reaction temperature and space time.
The reaction path could be found by analysing relation between
the space time and the distribution of products.Ethylene
dichloroide and hydrochloric acid werw the primary
decomposition products from trichloroethane.The ethylene
dichloroide was rther converted into carbon monoxide,carbon
dioxide and hydro chloric acid.Part of the carbon monoxide
react with oxygen to become carbon dioxide.Hydrochloric acid
were produced in low temperature.Hydrochloric acid could react
with oxygen to produce chlorine and water when the temperature
was increase. A significant part of chromium oxide on the
catalyst were losed after the reaction.It was likely that the
chromium oxide reacted with one of the products to generate a
volatile compound. The compound was carried away by the flowing
gas through the catalyst bed and caused the catalyst
deactivation.

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