期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
油酸甲酯的清洁合成 被引量:3
1
作者 李学苗 冯树波 +1 位作者 刘敏 李云飞 《可再生能源》 CAS 北大核心 2014年第8期1235-1238,共4页
分别研究了对甲苯磺酸和氯化胆碱/对甲苯磺酸形成的低共熔溶剂(DES-1)对油酸与甲醇酯化反应的催化效果。结果表明,氯化胆碱与对甲苯磺酸物质的量比为1∶3时所形成的DES对油酸甲酯化的催化活性较高。在醇油物质的量比为3∶1,反应温度为75... 分别研究了对甲苯磺酸和氯化胆碱/对甲苯磺酸形成的低共熔溶剂(DES-1)对油酸与甲醇酯化反应的催化效果。结果表明,氯化胆碱与对甲苯磺酸物质的量比为1∶3时所形成的DES对油酸甲酯化的催化活性较高。在醇油物质的量比为3∶1,反应温度为75℃,催化剂用量为2%和反应时间为4 h的条件下,DES和对甲苯磺酸的催化活性接近。此外,考察了氯化胆碱与尿素物质的量比为1∶2形成的低共熔溶剂(DES-2)对酯化产品混合物中残存酸性催化剂的去除效果。同样的条件下,DES-2将DES-1催化的酯化产品混合物的酸值降得更低,对甲苯磺酸催化的酯化产品混合物的酸值下降较少,说明DES-1比对甲苯磺酸更容易被洗掉。洗涤后的低共熔溶剂可循环用于下一次洗涤。DES-1催化剂的制备工艺简单,酯化转化率较高,该催化剂重复使用多次仍具有较高的酯化活性。 展开更多
关键词 生物柴油 低共熔溶剂 酯化 免水洗
下载PDF
Recent progress of waterless technologies for Jeans washing in denim industry
2
作者 Xuejiao Fang Sheng Li +1 位作者 Bihan Bie Changhai Yi 《服饰导刊》 2020年第3期38-44,共7页
This review focuses on the current situation of sustainable development of denim industry and analyzes the water consumption in the production process of denim.In the washing process of jeans,the dry treatment or near... This review focuses on the current situation of sustainable development of denim industry and analyzes the water consumption in the production process of denim.In the washing process of jeans,the dry treatment or near-anhydrous treatment is becoming a sustainable trend to replace the traditional wet treatment.From the perspective of environmental protection,this review summarizes the recent research frontiers of water-saving technologies such as recycling and utilization of printing and dyeing wastewater,foam finishing technology,ozone washing technology and laser washing technology in denim industry.With the upgrading of textile industry and the implementation of national environmental protection laws and regulations,technologies such as foam finishing,ozone washing and laser engraving have been well-developed in the field of denim garment washing processing.In the future,the denim industry will be revolutionized by the water-free manufacturing. 展开更多
关键词 Denim washing water-free manufacturing Cleaner production Ozone washing Laser washing
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部