韩文锋,习苗,王志昆,靳碧波,唐浩东,李瑛,刘化章

• 1:浙江工业大学工业催化研究所
• 2:浙江省化工研究院有限公司

摘要(Abstract)：

CHF_3是具有温室效应潜值(GWP)高达14800的强温室气体,而CF_3I可以作为新型灭火剂、制冷剂、半导体蚀刻及发泡剂等。本文研究了稀土助剂镧对Rb-K/AC催化CHF_3和I_2反应合成CF3I的性能的影响。通过扫描电镜(SEM)、CO_2~-程序升温脱附、热分析(TG/DTG)、X射线衍射(XRD)、X射线能谱仪(EDS)等表征手段研究了稀土助剂对催化剂的活性组分和载体表面性质的影响。结果表明,催化剂Rb-K/AC加入助剂La后,CO_2脱附峰温升高30℃,峰面积也增加,表明催化剂的碱性量和强度均增加;加入3%(wt)La后,由于其改变了催化剂活性组分与载体之间的相互作用,Rb和K在载体的表面含量分别从5.5%和7%提高到7.2%和8.1%;同时,CHF3转化率和CF3I选择性分别从40.2%和52.2%增加到58.7%和57.5%。LaOF具有较高的催化活性,可能是催化剂的活性中心之一。

关键词(KeyWords)： 硝酸镧;三氟甲烷;酸碱性;分散度;三氟碘甲烷;活性炭

Abstract:

Keywords:

基金项目(Foundation): 钱江人才计划(2013R10056);; 浙江省自然科学基金项目(LY12B03007);; 浙江省省属科研院所扶持专项(2015F50031)

作者(Author): 韩文锋,习苗,王志昆,靳碧波,唐浩东,李瑛,刘化章

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