24小时热门版块排行榜

返回列表

当前主题已经存档。

gongyuewei

木虫 (小有名气)

应助: 0 (幼儿园)
金币: 1611
帖子: 113
在线: 1.3小时
虫号: 446198
注册: 2007-10-29
性别: GG
专业: 能源化工

[交流] 请了解杂多酸的进来看看

请教大家几个翻译的问题，英语好的帮帮忙哦
Dodeca-Tungstophosphoric acid(TPA)
Dodeca-Molybdo phosphoric acid ammonium salt hydrate(DMAA)
Dodeca-Molybdo Phosphoric acid(PMA)
分别代表的什么物质啊，谢谢！

回复此楼

» 猜你喜欢

焙烧后的拉西环状铁钼催化剂侧面硬度高，应该如何降低？已经有1人回复
欢迎来稿已经有213人回复
专业论文润色/翻译怎么收费? 已经有96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
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

千里之行，始于足下！

1楼 2008-06-24 14:39:18

已阅回复此楼关注TA 给TA发消息送TA红花 TA的回帖

joinfun2005

银虫 (小有名气)

应助: 0 (幼儿园)
金币: 251.1
帖子: 127
在线: 12.8小时
虫号: 511811
注册: 2008-02-26
性别: GG
专业: 污染控制化学

★ ★
buffaloli(金币+2,VIP+0):多谢，辛苦了！

网上查的，希望有用
Dodeca-Tungstophosphoric acid(TPA)：
H3PO4.12WO3.x H2O
Dodeca-Molybdo phosphoric acid ammonium salt hydrate(DMAA)：H12Mo12N3O40P+aq
Dodeca-Molybdo Phosphoric acid(PMA)：
H3PO4.12MoO3.x H2O

Synthesis of Pharmaceutical Intermediates by Toluene Benzylation over Heteropoly Acids on Different Support

V. V. Bokade G.D. Yadav《天然气化学杂志》,2007年第16卷第2期
Selective formation of pharmaceutical intermediates like diphenylmethane, dimethyldiphenylmethane, benzyl toluene and benzoic acid by liquid phase, toluene benzylation with benzyl chloride as a benzylating agent, was systematically studied over plane clay （K-10, montmorillonite）, plane H-Beta, plane MFI structured titanosilicate （TS-1） and heteropoly acids [HPA, namely dodecatungstophosphoric acid [H3PO4.12WOa-xH2O] （TPA）, dodeca-molybdo phosphoric acid ammonium salt hydrate [H12Mo12N3040P＋aq] （DMAA）, sodium tungstate hydrated purified [Na12WO4.2H2O] （STH）] supported on clay, H-beta and TS-1. The 20%TPA/Clay, 30%TPA/H-Beta and 30%TPA/TS-1, were observed to be the best catalyst samples over plane clay, plane H-Beta and plane TS-1. The catalyst samples are compared with respect to benzyl chloride conversion and selectivities for diphenylmethane, dimethyl-diphenylmethane, benzyl toluene and benzoic acid. The reaction follows the pseudo-first order rate power law model. The apparent rate constants are calculated and compared with the reported ones. 相似文献

2. Toluene Alkylation with Methanol to p-Xylene over Heteropoly Acids Supported by Clay

V. V. Bokade S. S. Deshpande R. Patil S. Jain G. D. Yadav《天然气化学杂志》,2007年第16卷第1期
The alkylation of toluene with methanol for the selective formation of p-xylene was systematically studied. Very few studies have been reported on the use of superacids such as heteropolyacids on cheap supports, such as clay. This article deals with the use of different heteropoly acids （HPAs）, viz, Dodeca-Tungstophosphoric acid [H3PO4.12WO3.xH2O] （TPA）, Dodeca-Molyhdo phosphoric acid ammonium salt hydrate [H12Mo12N3O40P＋aq] （DMAA）, Dodeca-Molyhdo Phosphoric acid （PMA） on clay （MontmoriUonite, K-10） and as such plain clay. This comparative study reveals that 20%PMA/Clay shows 62% toluene conversion and 100% selectivity toward p-xylene