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Application of Choline Chloride·xZnCl2 Ionic Liquids for Preparation of Biodiesel 被引量:14
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作者 龙涛 邓岳锋 +1 位作者 甘树才 陈继 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2010年第2期322-327,共6页
The inexpensive and moisture-stable Lewis-acidic ionic liquids were prepared and applied for transesterification of soybean oil to biodiesel.The influences of molar ratio of methanol to soybean oil,reaction temperatur... The inexpensive and moisture-stable Lewis-acidic ionic liquids were prepared and applied for transesterification of soybean oil to biodiesel.The influences of molar ratio of methanol to soybean oil,reaction temperature and amount of ionic liquids were investigated.The transesterification of soybean oil to biodiesel catalyzed by choline chloride·xZnCl2 ionic liquids showed many advantages such as mild conditions and lower cost.On the other hand,the non-ideal yield and complicated separation between biodiesel and soybean oil were also investigated and analyzed.The improvement on the systems of choline chloride·xZnCl2 was proposed for further investigation. 展开更多
关键词 ionic liquids BIODIESEL TRANSESTERIFICATION Lewis acid
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中小学校长与教师的交换行为:基础及类型
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作者 傅树京 《教育发展研究》 CSSCI 北大核心 2008年第18期17-22,共6页
在中小学领导过程中,校长与教师都要通过实施与对方的交换行为,借助并依赖对方的资源,以有效实现学校组织目标和满足教师需要。这种交换行为包括体制化交换和非体制化交换,前者指校长与教师在中小学设置的组织机构和各种制度基础上实施... 在中小学领导过程中,校长与教师都要通过实施与对方的交换行为,借助并依赖对方的资源,以有效实现学校组织目标和满足教师需要。这种交换行为包括体制化交换和非体制化交换,前者指校长与教师在中小学设置的组织机构和各种制度基础上实施的交换行为;后者指双方不限于正式组织及其制度范围实施的交换行为。二者缺一不可,互为补充。 展开更多
关键词 交换行为 体制化交换 体制化交换
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