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An Efficient Noncatalytic Protocol for the Synthesis of Trisubstituted Imidazole in Polyethylene Glycol Using Microwaves~!2009-11-14~!2010-03-10~!2010-09-16~! 微波合成聚乙二醇三取代咪唑的高效非催化工艺研究2009-11-14 2010-03-10 2010-09-16
The Open Catalysis Journal Pub Date : 2010-09-16 DOI: 10.2174/1876214X01003010058
S. Nalage
{"title":"An Efficient Noncatalytic Protocol for the Synthesis of Trisubstituted Imidazole in Polyethylene Glycol Using Microwaves~!2009-11-14~!2010-03-10~!2010-09-16~!","authors":"S. Nalage","doi":"10.2174/1876214X01003010058","DOIUrl":"https://doi.org/10.2174/1876214X01003010058","url":null,"abstract":"","PeriodicalId":22755,"journal":{"name":"The Open Catalysis Journal","volume":"1 1","pages":"58-61"},"PeriodicalIF":0.0,"publicationDate":"2010-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90614873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
Selective Formation of Light Olefins from COpH2 Over Silica Supported Co/CeO2 Prepared by Fusion Method: Preparation, Characterization and Operational Conditions Effects~!2009-10-27~!2010-01-01~!2010-09-16~! 熔融法制备二氧化硅负载Co/CeO2上COpH2选择性生成轻烯烃的制备、表征及操作条件影响
The Open Catalysis Journal Pub Date : 2010-09-16 DOI: 10.2174/1876214X01003010062
A. Beigbabaei
{"title":"Selective Formation of Light Olefins from COpH2 Over Silica Supported Co/CeO2 Prepared by Fusion Method: Preparation, Characterization and Operational Conditions Effects~!2009-10-27~!2010-01-01~!2010-09-16~!","authors":"A. Beigbabaei","doi":"10.2174/1876214X01003010062","DOIUrl":"https://doi.org/10.2174/1876214X01003010062","url":null,"abstract":"","PeriodicalId":22755,"journal":{"name":"The Open Catalysis Journal","volume":"16 1","pages":"62-69"},"PeriodicalIF":0.0,"publicationDate":"2010-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84920634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Zinc Catalyzed Claisen Rearrangement of Allyl Aryl Ethers to o-Allylated Phenols in Liquid Phase 锌催化烯丙基芳基醚在液相中clisen重排为o-烯丙化酚
The Open Catalysis Journal Pub Date : 2010-04-23 DOI: 10.2174/1876214X01003010040
Monika Gupta
{"title":"Zinc Catalyzed Claisen Rearrangement of Allyl Aryl Ethers to o-Allylated Phenols in Liquid Phase","authors":"Monika Gupta","doi":"10.2174/1876214X01003010040","DOIUrl":"https://doi.org/10.2174/1876214X01003010040","url":null,"abstract":"A simple and efficient method is developed for the zinc catalyzed Claisen rearrangement of allyl aryl ethers to o-allyl phenols by stirring in an oil-bath at 55 °C in liquid phase. Moreover, zinc powder is re-cyclable up to six times use without much loss of significant activity. In addition to it, the products are obtained in good to excellent yields and are in a state of high purity. The structures of the products are confirmed by 1 H NMR, 13 CNMR, IR and mass spectral data and comparison with authentic samples prepared according to the literature methods.","PeriodicalId":22755,"journal":{"name":"The Open Catalysis Journal","volume":"57 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2010-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86772542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Hydroformylation of Synthetic Naphtha Catalyzed by a Dinuclear gem-Dithiolato-Bridged Rhodium(I) Complex 双核宝石-二硫代偶联铑配合物催化合成石脑油的氢甲酰化反应
The Open Catalysis Journal Pub Date : 2010-04-23 DOI: 10.2174/1876214X01003010044
A. J. Pardey, J. Suarez, M. Ortega, C. Longo, J. Pérez‐Torrente, L. Oro
{"title":"Hydroformylation of Synthetic Naphtha Catalyzed by a Dinuclear gem-Dithiolato-Bridged Rhodium(I) Complex","authors":"A. J. Pardey, J. Suarez, M. Ortega, C. Longo, J. Pérez‐Torrente, L. Oro","doi":"10.2174/1876214X01003010044","DOIUrl":"https://doi.org/10.2174/1876214X01003010044","url":null,"abstract":"This work focuses on the use of a gem-dithiolato-bridged rhodium(I) (Rh2(μ-S2CBn2)(cod)2) complex (cod = 1,5-cyclooctadiene, Bn2CS2 2� = 1,3-diphenyl-2,2-dithiolatopropane) dissolved in toluene in the presence of monodentate phosphite P-donor ligand (P(OPh)3) under carbon monoxide/hydrogen (1:1, syngas) atmosphere as an effective catalyst for hydroformylation of some olefins (oxo-reactions). The capability of this system to catalyze the hydroformylation of hex-1-ene, cyclohexene, 2,3-dimethyl-but-1-ene and 2-methyl-pent-2-ene and their quaternary mixture (synthetic naphtha) has been demonstrated. This innovative method to perform the in situ hydroformylation of the olefins present in naphthas to oxygenated products would be a promissory work for a future industrial catalytic process applicable to gasoline improving based on oxo-reactions. An important observation is that variation of CO/H2 pressure (6.8  34.0 atm), temperature (60  80 oC), reaction time (2  10 h), rhodium concentration ((1.0  1.8)x10 -3 mol/L) affect hydroformy- lation reaction rates. Optimal conversion to oxygenated products were achieved under (Rh) = 1.8 x10 -2 mol/L, P(CO/H2) = 34 atm (CO/H2 = 1:1) at 80 oC for 10 h.","PeriodicalId":22755,"journal":{"name":"The Open Catalysis Journal","volume":"3 1","pages":"44-49"},"PeriodicalIF":0.0,"publicationDate":"2010-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75166766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Manganese (II) Chloride-Catalyzed Conjugated Addition of Amines to Electron Deficient Alkenes in Methanol-Water Medium~!2009-10-16~!2009-12-15~!2010-03-30~! 氯代锰在甲醇-水介质中催化胺与缺电子烯烃的共轭加成
The Open Catalysis Journal Pub Date : 2010-04-07 DOI: 10.2174/1876214X01003010034
A. Roy, Dhiman Kundu, S. K. Kundu, A. Majee, A. Hajra
{"title":"Manganese (II) Chloride-Catalyzed Conjugated Addition of Amines to Electron Deficient Alkenes in Methanol-Water Medium~!2009-10-16~!2009-12-15~!2010-03-30~!","authors":"A. Roy, Dhiman Kundu, S. K. Kundu, A. Majee, A. Hajra","doi":"10.2174/1876214X01003010034","DOIUrl":"https://doi.org/10.2174/1876214X01003010034","url":null,"abstract":"A simple, general and efficient method has been developed for the conjugate addition of a variety of aliphatic and aromatic amines to electron deficient alkenes in the presence of a catalytic amount of manganese (II) chloride in methanol-water to produce the corresponding -amino derivatives in excellent yields at room temperature.","PeriodicalId":22755,"journal":{"name":"The Open Catalysis Journal","volume":"19 1","pages":"34-39"},"PeriodicalIF":0.0,"publicationDate":"2010-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83554301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Transfer Hydrogenation of Ketones Using Recyclable (η6-Arene)Ruthenium(II) Naphthylazo-p-Methyl Phenolate Complex 可回收(η - 6-芳烃)钌(II)萘杂合-对甲基苯酚配合物的酮类转移加氢反应
The Open Catalysis Journal Pub Date : 2010-03-30 DOI: 10.2174/1876214X01003010030
M. U. Raja, N. Raja, R. Ramesh
{"title":"Transfer Hydrogenation of Ketones Using Recyclable (η6-Arene)Ruthenium(II) Naphthylazo-p-Methyl Phenolate Complex","authors":"M. U. Raja, N. Raja, R. Ramesh","doi":"10.2174/1876214X01003010030","DOIUrl":"https://doi.org/10.2174/1876214X01003010030","url":null,"abstract":"Recyclable (� 6 -p-cymene)-ruthenium(II) 2-naphthylazo-p-methylphenolate catalyst of formulation (RuCl( 6 -p- cymene)(L)) (where L = mono anionic 2-naphthylazo-p-methylphenolate ligand) is shown to be an efficient catalyst for transfer hydrogenation of a wide range of alkyl and aryl ketones in the presence of 2-propanol and KOH.","PeriodicalId":22755,"journal":{"name":"The Open Catalysis Journal","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2010-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86286869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Outstanding HC-SCR of Lean NOx Over Pt/Mesoporous-Silica Catalysts~!2009-08-30~!2009-10-27~!2010-03-10~! Pt/介孔-二氧化硅催化剂上贫氮氧化物的优异HC-SCR性能
The Open Catalysis Journal Pub Date : 2010-03-10 DOI: 10.2174/1876214X01003010024
T. Komatsu, K. Tomokuni, M. Konishi, T. Shirai
{"title":"Outstanding HC-SCR of Lean NOx Over Pt/Mesoporous-Silica Catalysts~!2009-08-30~!2009-10-27~!2010-03-10~!","authors":"T. Komatsu, K. Tomokuni, M. Konishi, T. Shirai","doi":"10.2174/1876214X01003010024","DOIUrl":"https://doi.org/10.2174/1876214X01003010024","url":null,"abstract":"Perfect de-NOx over a wide temperature range above 170 °C was achieved using a new Pt-catalyst supported on mesoporous silica (Pt/MPS) and a stoichiometric amounts of long-chain hydrocarbons as reducing agents for NOx- purification. Kinetic investigation of the HC-SCR of lean NOx over Pt/MPS, Pt/alumina and Pt/zirconia showed that such a remarkable activity of Pt/MPS is due to a large frequency factor but not to activation energy. Acid-treatment of the supports increased the activities of the catalysts and generated new IR-peaks in the range 1000-1200 cm -1 , which suggests the support-effects on the catalyst-activities to be related to the special surface functional groups of the supports. The present HC-SCR must be very useful to remove diesel-NOx by means of pulse-injection of diesel fuel into the exhaust.","PeriodicalId":22755,"journal":{"name":"The Open Catalysis Journal","volume":"251 1","pages":"24-29"},"PeriodicalIF":0.0,"publicationDate":"2010-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84676843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Heteropoly Acid in Ionic Liquid - An Efficient Catalyst for the Preparation of 2H-Indazolo(2,1-b)Phthalazine-Triones 离子液体中的杂多酸——制备2h -吲哚(2,1-b)酞菁酮的高效催化剂
The Open Catalysis Journal Pub Date : 2010-02-09 DOI: 10.2174/1876214X01003010014
R. Fazaeli, H. Aliyan, N. Fazaeli
{"title":"Heteropoly Acid in Ionic Liquid - An Efficient Catalyst for the Preparation of 2H-Indazolo(2,1-b)Phthalazine-Triones","authors":"R. Fazaeli, H. Aliyan, N. Fazaeli","doi":"10.2174/1876214X01003010014","DOIUrl":"https://doi.org/10.2174/1876214X01003010014","url":null,"abstract":"H-Indazolo(2,1-b)phthalazine-1,6,11(13H)-trione derivatives were synthesized in a simple and efficient method from the three-component condensation reaction of phthalhydrazide, dimedone, and aromatic aldehydes by H3PW12O40 in ionic liquid in good to excellent yields and short reaction times. The ionic liquid 1-butyl-3- methylimidazolium tetrafluoroborate ((bmim)BF4) offered the best results in terms of yield of the products. It was observed that a homogeneous reaction medium proved beneficial for the yield of the reaction.","PeriodicalId":22755,"journal":{"name":"The Open Catalysis Journal","volume":"74 1","pages":"14-18"},"PeriodicalIF":0.0,"publicationDate":"2010-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83999389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 39
Crystallization Optimizing of Cefradine 头孢拉定结晶工艺优化
The Open Catalysis Journal Pub Date : 2010-01-27 DOI: 10.2174/1876214X01003010019
Lei Du, W. Luo
{"title":"Crystallization Optimizing of Cefradine","authors":"Lei Du, W. Luo","doi":"10.2174/1876214X01003010019","DOIUrl":"https://doi.org/10.2174/1876214X01003010019","url":null,"abstract":"Cefradine crystallization was studied under different conditions. The optimal conditions for crystallization were: dissolving temperature, 15°C; initial temperature in crystallization, 30°C; cooling temperature in crystallization, 0°C; and adding 1,2-propanediol as adjuvant agent with a volume ratio 0.2 of water solution. The yield of cefradine crystallization is about 92% under these conditions. The purity of cefradine crystals is over 98% under the same conditions. The average size of cefradine crystal is 500 μm. The content of cefalexin in crystal is reduced to only 0.36%.","PeriodicalId":22755,"journal":{"name":"The Open Catalysis Journal","volume":"60 1","pages":"19-23"},"PeriodicalIF":0.0,"publicationDate":"2010-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79336844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Heterogeneous Supported Catalysts for Butadiene Polymerization: The Effect of Calcination Temperature and Solvent 多相负载型丁二烯聚合催化剂:煅烧温度和溶剂的影响
The Open Catalysis Journal Pub Date : 2010-01-09 DOI: 10.2174/1876214X01003010001
S. Hussain, Rafia Naheed, A. Badshah, M. Saddique, M. Khalid, Z. Baig
{"title":"Heterogeneous Supported Catalysts for Butadiene Polymerization: The Effect of Calcination Temperature and Solvent","authors":"S. Hussain, Rafia Naheed, A. Badshah, M. Saddique, M. Khalid, Z. Baig","doi":"10.2174/1876214X01003010001","DOIUrl":"https://doi.org/10.2174/1876214X01003010001","url":null,"abstract":"The polymerization of butadiene was studied using heterogeneous cobalt nickel (oxide) bimetallic catalyst. The prepared catalyst was subjected to calcination at different temperatures. This treatment results in the formation of different phases with multiple oxidation states. The characterization of the catalyst was carried out by XRD, SEM, EDX, TGA, FTIR and TPR/TPD. The catalytic activity was studied for the polymerization of butadiene gas in toluene, n-hexane and ethanol in a Parr reactor system. The products obtained, were characterized by FTIR, GC/MS, 1 H and 13 C NMR spectroscopy, Laser Light Scattering (LLS) and GPC. The best activity was achieved on the catalyst sample calcined at 1173 K in ethanol solvent. The product contains aliphatic and aromatic carbonyl compounds and polybutadiene terminated by OH group. The GPC and LLS studies indicates that polydispersity of the products are in the narrow range and high molecular weight product. The study reflects that the catalytic reaction conditions, the calcinations temperatures which control the oxidation state, phase of the catalyst and stability of the catalyst are mainly responsible for the change in products selectivity.","PeriodicalId":22755,"journal":{"name":"The Open Catalysis Journal","volume":"29 1","pages":"1-13"},"PeriodicalIF":0.0,"publicationDate":"2010-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73692833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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