维普中文期刊产品整合服务
126篇 您的检索式:作者名="HERAVI"
    题名 作者 年代 出处 被引量
1二氧化硅担载Preyssler杂多酸上苯和1-癸烯的烷基化反应:利用表面响应方法进行统计设计(英文)显示文摘The response surface method (RSM) was applied to study the liquid phase alkylation of benzene with 1-decene catalyzed by means of silica supported Preyssler heteropoly acid. A three step experimental design was developed based on the central composite design (CCD). Catalyst loading, catalyst mass percent, and benzene to 1-decene molar ratio were used to optimize 1-decene conversion and linear alkylbenzene (LAB) yield. The results indicated that the quadratic model was significant for these two responses. The experimental results revealed that all variables had positive effect on 1-decene conversion. While increasing the catalyst loading tends to decrease LAB yield. Benzene to 1-decene molar ratio was found to be the most important factor that influenced LAB yield with a positive effect. Design expert software suggested several optimized solutions, among them the best choice was to use 31% catalyst loading, benzene to 1-decene molar ratio of 13, and catalyst percent of 3.6 wt% for obtaining 100% conversion and 88% LAB production yield.A. HAFIZI A. AHMADPOUP M. M. HERAVI F. F. BAMOHARRAM M. KHOSROSHAHI 2012催化学报2012,33,3:6
2纳米SiO_2负载Preyssler杂多酸催化剂对水杨酸与苄醇或脂肪醇酯化反应的催化性能(英文)显示文摘An efficient and environmentally benign procedure for the catalytic esterification of salicylic acid with aliphatic alcohols, CnH2n+1OH(n=1-5)and benzylic alcohols,RC6H4CH2OH(R=H,NO2,OCH3,Br,Cl,Me)was developed using nano-SiO2-supported Preyssler heteropolyacid both under thermal conditions and microwave irradiation.Silica nanostructures were obtained through a sol-gel method and were characterized by transmission electron microscopy and powder X-ray diffraction.The effects of various parameters such as solvent type,molar ratio of substrates,Preyssler heteropolyacid loading on silica,catalyst amount,temperature,and reaction time were studied and the optimum conditions were obtained.It has been found that the catalyst with 30 wt%loading is highly active and shows high yields in esterification reactions.The use of nano-SiO2-supported Preyssler heteropolyacid coupled with microwave irradiation allows a solvent-free,rapid(3 min),and high-yielding reaction.This catalyst can be easily recovered and reused for many times without a significant loss in its activity.Fatemeh F. BAMOHARRAM Majid M. HERAVI Javad EBRAHIMI Ali AHMADPOUR Mojtaba ZEBARJAD 2011催化学报2011,32,5:6
3Morpholine Catalyzed One-pot Multicomponent Synthesis of Compounds Containing Chromene Core in Water显示文摘一系列 dihydropyrano [c ] chromene 在 morpholine 催化,,的水里经由醛, malononitrile 和 4-hydroxycoumarin 的冷凝作用被获得一个壶反应。我们的调查结果的意义联系到减少器官的溶剂,潜在地有毒、危险的材料,以及它的简洁的使用,好收益,温和条件,和更低的费用。Heravi, Majid M. Zakeri, Masoumeh Mohammadi, Narges 2011Chinese Journal of Chemistry2011,29,6:5
4An efficient fluorination of β-ketosulfones promoted by a room-temperature ionic liquid at ambient conditions under ultrasound irradiation using Selectfluor^(TM) F-TEDA-BF_4显示文摘The fluorination reaction involving aβ-ketosulfones by Selectfluor^(TM) was efficiently promoted by the ionic liquid,[Hbim]BF_4 (EL) as a reaction medium with methanol as co-solvent at room temperature under ultrasonic irradiation to afford the corresponding mono and difluoro-β-ketosulfones in excellent yields.The advantages of this method include among others the use of a recyclable, non-volatile ionic liquid,which promotes this protocol under room temperature without the requirement of any added catalyst under ultrasonic irradiation.Mohammad Reza Poor Heravi 2010Chinese Chemical Letters2010,21,12:3
5On Water: Bronsted Acidic Ionic Liquid [(CH2)4SO3HMIM][HSO4] Catalysed Synthesis of Oxindoles Derivatives显示文摘Karimi Narges Oskooi Hooesin Heravi Majid Saeedi Mina Zakeri Masoumeh Tavakoli Niloofar 2011Chinese Journal of Chemistry2011,29,2:2
6A CatalyticMethod for Synthesis of y-Butyrolactone, f-Caprolactoneand 2-Cumaranone in the Presence of Preyssler’s Anion,14', as a Green and Reusable Catalyst 显示文摘Banoharram F F Heravi M M Roshani M 2006JMol Catal A : Chem2006,252,12:1
7Optimization of Electrotransformation Conditions for Probiotic Lactobacilli by Expression Plasmids Containing Phytase Enzyme and Chenopodium Pollen Allergen (che a2) Genes显示文摘HERAVI R M NASIRAII L R SANKIAN M 0,,13:1
8Thorough tuning of the aspect ratio of Gold nanorods using response surface methodology显示文摘Hormozi- Nezhad MR Robatjazi H Jalali- Heravi M 2013Anal Chim Acta2013,779,:1
9Recent advances in application of intramolecular Suzuki cross-coupling in cyclization and heterocyclization显示文摘Majid Heravi Elaheh Hashemi 2012Monatshefte für Chemie - Chemical Monthly2012,,6:1
10Primary pollutant prediction from integrated thermo fluid-kinetic pulse combustor models显示文摘Heravi H M Dawson J R Bowen P J 2005Journal of Propulsion and Power2005,21,6:1
11Applications of heteropoly acids in multicomponent reactions显示文摘Heravi M M Faghihi Z 2014Journal of the Iranian Chemical Society2014,11,1:1
12查看详情显示文摘Oskooie H. A Heravi M. M Tahershamsi L Sadjadi S Ta- jbakhsh M 0,,:1
13Highly efficient, four-component one-pot synthesis of tetrasubstitutedimidazoles using Keggintype heteropolyacids as green and reusable catalysts 显示文摘HERAVI M M DERIKVAND F BAMOHARRAM F F 2007J Mol Catal A Chem2007,263,:1
14Recent developments in use of heteropolyacids, their salts and polyoxometalates in organic synthesis显示文摘HERAVI M M SADJADI S 2009Journal of the Iranian Chemical Society2009,6,1:1
15Heteropolyacid as a new, green and recyclable catalyst for the synthesis of 2-aryl benzoxazole under solvent-free conditions显示文摘HERAVI M M JAVANMARDI N OSKOOIE H A 2009Journal of the Chinese Chemical Society2009,56,3:1
16Mild and selective nitration of phenols by zeofen显示文摘Bigdel M A Heravi M M Nemati F 2007Synth Commun2007,37,:1
17Green and reusable heteropolyacid catalyzed oxidation of benzylic, allylic and aliphatic alcohols to carbonyl compounds 显示文摘Heravi M M Zadsirjan V Bakhtiari K 2007Catal Commun2007,8,3:1
18A catalytic method for synthesis of biginelli-type 3,4-dihydropyrimidin-2(1H)-one using 12-tungstophosphoric acid显示文摘Heravi M M Derikvand F Bamoharram F F 2005Journal of Molecular Catalysis A:Chemical2005,,:1
19Evaluation of the relationship between vertical facial height and the morphology of the temporomandibular joint in skeletal class 3 patients 显示文摘Imanimoghaddam M Heravi F Madani AS 2012J Calif Dent Assoc2012,40,87:1
20Regioselective and high-yielding bromination of aromatic compounds using hexamethylenetetramine-bromine显示文摘M M Heravi N Abdolhosseini H A Oskooie 2005Tetrahedron Letters2005,46,:1
返回顶部 每页显示:
共7页 首页 上一页 第1页 下一页 末页 /7 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费