QQ客服 官方微博 反馈留言

浏览/检索结果: 共4条，第1-4条 帮助 限定条件 内容类型：专利     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Preparing 9-fluorenone comprises mixing fluorene with water as solvent, alkali catalyst, quaternary ammonium salt as phase transfer agent and oxidant and then reacting. 专利 申请日期: 2014-01-01, 公开日期: 2014-05-14 作者:  SHI Z LI H YAN J YU L GAO Z HE Y 收藏  |  浏览/下载：15/0  |  提交时间：2019/12/11 Preparation of high-purity 9-fluorenone involves providing industrial fluorene as raw material, adding aromatic organic solvents, alkali solution and quaternary ammonium salts, cooling reaction solution, crystallizing and filtering. 专利 申请日期: 2014-01-01, 公开日期: 2014-05-21 作者:  SHI Z LI H YAN J YU L GAO Z HOU L 收藏  |  浏览/下载：4/0  |  提交时间：2019/12/11 Preparing fine powder nickel aluminide composite oxide desulfurizer comprises carrying out preparation of micro emulsion, crystallizing, washing, and burning. 专利 申请日期: 2010-01-01, 公开日期: 2010-09-15 作者:  CHEN G ZHAO L SHI Y LI X ZHAO Q YAN 收藏  |  浏览/下载：3/0  |  提交时间：2019/12/24 N6-SUBSTITUTED ADENOSINE DERIVATIVES AND N6-SUBSTITUTED ADENINE DERIVATIVES AND USES THEREOF 专利 作者:  SHI, JIANGONG;  ZHANG, JIANJUN;  YUE, ZHENGGANG;  LI, MIN;  ZHU, CHENGGEN 收藏  |  浏览/下载：8/0  |  提交时间：2019/12/05