| 查看: 405 | 回复: 2 | |||
| 当前主题已经存档。 | |||
| 当前只显示满足指定条件的回帖，点击这里查看本话题的所有回帖 | |||
yeqs1铁杆木虫 (职业作家)
|
[交流]
求助：铑碳催化剂的用途和用量
|
||
|
哪位高人能介绍一下铑碳催化剂的用途和用量， 或者推荐一些文献，不胜感激！ 我查中文文献好像很少 |
回复此楼» 猜你喜欢
欢迎来稿
已经有213人回复
-
双一流大学湘潭大学“化工过程模拟与强化”国家地方联合工程研究中心招收博士生
已经有52人回复
-
专业论文润色/翻译怎么收费?
已经有93人回复
-
大连海事大学国家级人才团队（船舶洁净能源研究中心）2027年博士研究生招生启事
已经有1人回复
-
中国地质大学杨明教授组招收2027年博士能源化学、催化材料方向（每月5K+）
已经有56人回复
-
中国地质大学杨明教授组招收2027年博士能源化学、催化材料方向（每月5K+）
已经有58人回复
-
东南大学杰青团队-催化方向硕博士生、博士后、科研助理招募
已经有0人回复
-
北京工业大学“能源环境协同催化”方向拟招收2027年“学术学位”和“专业学位”博士生
已经有0人回复
yeqs1
铁杆木虫 (职业作家)
- 应助: 3 (幼儿园)
- 贵宾: 0.21
- 金币: 9461.3
- 散金: 250
- 红花: 2
- 帖子: 4642
- 在线: 646.1小时
- 虫号: 304423
- 注册: 2006-12-09
- 专业: 配位化学
3楼2008-02-20 19:51:31
fangyuan2004
荣誉版主 (正式写手)
- 应助: 0 (幼儿园)
- 贵宾: 0.69
- 金币: 1952.5
- 红花: 1
- 帖子: 994
- 在线: 18.2小时
- 虫号: 442273
- 注册: 2007-10-27
- 性别: GG
- 专业: 化工
- 管辖: 石油化工
★
yeqs1(金币+1,VIP+0):谢谢！
yeqs1(金币+1,VIP+0):谢谢！
|
帮你找两篇 1、United States Patent 4728630 A particulate catalyst composition suitable for purification of terephthalic acid under reducing conditions and a method of preparation of such catalyst are disclosed. The catalyst composition includes catalytically active rhodium on a porous, granular, carbonaceous support material having a surface area of at least about 600 m2 /gram. Rhodium is present in an amount of about 0.01 to about 2 weight percent, based on the total weight of dry catalyst composition and calculated as elemental metal. In the presence of hydrogen, this catalyst exhibits a reduced terephthalic acid decomposition rate that is comparable to that for a palladium-on-carbon catalyst having the same catalyst metal loading. The catalyst is prepared by contacting a carbonaceous support material having a surface area of at least 600 m2 /gm and a pH value in its aqueous suspension of 9-11 with an aqueous rhodium salt solution having a pH of 1-4. 2、SYNTHESIS OF ENANTIOMERICALLY PURE CYCLOHEXYLGLYCINE.SYNTHETIC COMMUNICATIONS, 29(24), 4327–4332 (1999) use rhodium on carbon (Rh/C) as the hydrogenation catalyst for the preparation of (S)-1. Using 0.05 equiv. of 5% Rh/C and 3.6 bar of H2- pressure, the hydrogenation proceeded smoothly at 50 °C in aqueous HCl. After removal of the catalyst, the product (S)-1 was easily isolated by neutralising the reaction mixture, followed by filtration. After drying, pure (S)-1 was isolated in 92% yield.15 Determination of the e.e. by HPLC showed that no racemisation hadoccurred. So, Rh/C can be used as an effective catalyst for the hydrogenation of phenylglycine to 1 without racemisation or significant hydrogenolysis. This method will probably also be effective in the hydrogenation of other aromatic amino acids such as 4-hydroxy-phenylglycine, phenylalanine and tyrosine. |
2楼2008-02-20 13:43:25
