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简介：ThecatalyticactivityofFe/ZSM-5fortheselectivereductionofNOtoN2withmethaneinthepresenceofexcessO2wasstudied.Fe/ZSM-5catalystswithvariousFeloadingswerepreparedbyimpregnationmethod.ItiswellknownthatmethaneisinactivewhenFe/ZSM-5asthecatalystfortheselectivecatalyticreduction(SCR)ofNOwithmethane.However,thispapershowsthatwhenthecontentofFewasabout0.5%,Fe/ZSM-5showedhighercatalyticactivityandselectivityofmethane,andputforwardmeasurableactivationforCH4isanimportantfactorforthereactionofremovalofNOxwithCH4.

简介：ThepartialoxidationofethanoltohydrogenwasinvestigatedoverNi/Fe/Lacatalystspreparedbytheco-precipitationmethod.TheeffectsofintroductionofLapromoterandthereactiontemperatureonthecatalyticperformancewerestudied.ItwasfoundthattheintroductionofLaintoNi/Fecatalystsishelpfultoincreasetheselectivitytohydrogenandthestabilityofthecatalysts.TheresultsofXRDandXPScharacterizationshowthatthestructureofthecatalystwaschangedduringthereaction.TheexistenceofLaFeO3speciesispossiblythemainreasonoftheincreaseofthecatalyststability.

简介：Several2.0wt%nickelcatalystssupportedonnanometerbimodalmesoporousaluminosilicate(NBMAS),AlHMSandAlMCM-41werepreparedbymeansofthewetnessimpregnationmethod.ThecharacterizationtechniquessuchasPy-FTIRandH2chemisorptionshowedthattheamountofBronstedacidsitesdecreasedintheorderofNi/A1HMS>Ni/AlMCM-41>Ni/NBMAS,whilethenickeldispersiondifferedalittle.Inthecatalyticn-dodecanehydroconversion,thehighestconversionwasobtainedoverNi/NBMAS,andthelowestisomerizationselectivityoccurredoverNi/A1HMS.Forthecrackedproducts,thesymmetricalcarbonnumberdistributioncenteredatC6wasobtainedontheNi/AlMCM-41catalystduetothewellbalancedmetal/acidfunctions,whereastheNi/AlHMSandNi/NBMAScatalystsledtomoreC3-C5andC1+C11products,respectively.

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简介：［1］G.C.Chinchen,P.J.Denny,J.R.Jennings,M.S.Spencer,K.C.Waugh,Appl.Catal.,1988,36,1.［2］R.A.Koppel,A.Baiker,Appl.Catal.,1992,84,77.［3］M.Satio,T.Fujitani,M.Takeuchi,T.Watanabe,Appl.Catal.,1996,138,311.［4］J.A.Brown,N.Homs,A.T.Bell,J.Catal.,1990,124,73.［5］J.S.Lee,K.Moon,S.H.Lee,S.Y.Lee,Y.G.Kim,Catal.Lett.,1995,34,93.［6］C.Frohlich,R.A.Koppel,A.Baiker,M.Kilo,A.Wokaun,Appl.Catal.,1993,106,275.［7］J.F.Deng,Q.Sun,Y.L.Zhang,D.Wu,S.Y.Chen,Appl.Catal.,1996,139,75.［8］K.K.Bando,K.Sayama,H.Kusama,K.Okabe,H.Arakawa,Appl.Catal.,1997,165,391.［9］G.C.Chinchen,K.C.Waugh,D.A.Whan.Appl.Catal.,1986,25,101.［10］B.Denise,R.P.A.Sneeden,B.Beguin,O.Cherifi.Appl.Catal.,1987,30,353.［11］G.C.Chinchen,K.C.Waugh.J.Catal.,1986,97,280.［12］T.H.Fleisch,R.L.Mieville.J.Catal.,1984,90,165.［13］K.Klier,V.Chatikavanij,R.G.Herman,G.W.Simmons.J.Catal.,1982,74,343.［14］R.Burch,R.J.Chappel.Appl.Catal.,1992,45,65.［15］H.Berndt,V.Briehn,S.Evert.Appl.Catal.,B,1992,86,65.［16］W.P.Dow,Y.P.Wang,T.J.Huang.J.Catal,1996,160,155.

简介：ＯｘｉｄａｔｉｖｅＤｅｈｙｄｒｏｇｅｎａｔｉｏｎｏｆＩｓｏｂｕｔａｎｅｔｏＩｓｏｂｕｔｙｌｅｎｅｏｖｅｒＦ￣－ＭｏｄｉｆｉｅｄＲａｒｅＥａｒｔｈＭｅｔａｌＯｘｉｄｅＣａｔａｌｙｓｔｓＺＨＡＮＧＷｅｉ－ｄｅ，ＴＡＮＧＤｉｎｇ－ｌｉａｎｇ，ＬＡＩＷｅｎ－...

简介：明确的表达以前由作者介绍了因为库仑积分被概括到另外的二中心的积分，除了交换积分。在这个框架以内，分子的积分与递归地评估的著名不完全的gamma功能和这些功能有关仔细以一些新功能被表示。在混合积分的情况中产生的特刊被处理，并且结果与在文学发现的相比。

简介：极其细小磨擦非结晶的合金催化剂被化学减小与KBH4准备。在在气压的cinnamaldehyde的液体阶段加氢期间，Ru-B催化剂准备了展出优秀选择到cinnamyl酒精。当加氢与超声的照耀被执行时，当到cinnamyl酒精的选择仍然保持几乎未改变时，反应率能极大地被提高。加氢率随超声的频率或照耀时间的增加被增加。根据各种各样的描述，例如XRD，XPS，TEM，赌注和ICP，结构、电子的特征上的超声的照耀的效果磨擦催化剂简短被学习。同时，催化表演上的ultrasonication的提升效果也基于cinnamaldehyde的选择加氢被讨论到cinnamyl酒精。

简介：在在甲醇的9-vinyladenine和嘧啶库胸腺嘧啶之间的有约束力的机制与紫外可见的spectrophotometric方法被学习。把学习基于这，用象一个模板分子的胸腺嘧啶，是的9-vinyladenine是的新奇功能的单体和diethylene乙二醇dimethacrylate新cross-linker，特定的diethylene乙二醇基于dimethacrylate的分子地印的聚合的膜在纤维素支持上被准备。然后，结果地聚合的膜形态学与扫描电子显微镜学被设想，它的permselectivity作为底层用胸腺嘧啶，uracil，cytosine，腺嘌和guanine被检验。这结果证明印与diethylene乙二醇dimethacrylate准备的聚合的膜比另外的nucleic酸底为模板分子胸腺嘧啶和它的最佳的模拟uracil展出了更高的运输能力。膜也比作为cross-linker与乙烯乙二醇dimethacrylate做的印的膜呈现了更高的permselectivity。包括五nucleic酸的混合物什么时候基于胸腺嘧啶，uracil，cytosine，腺嘌和guanine，通过了diethylene乙二醇基于dimethacrylate的印胸腺嘧啶的聚合的膜，为模板分子胸腺嘧啶和它的最佳的模拟uracil的膜的识别被表明。因为它的高选择，作为cross-linker与diethylene乙二醇dimethacrylate准备的分子地印的膜可能对DNA的绝对hydrolysates的胸腺嘧啶试金或在生物样品的RNA的绝对hydrolysates的uracil试金适用，这被预言。

简介：Abinitio计算轨道并且在Slater上的一些开壳、靠近壳的原子的扎根的州的精力与量数字打orbitals有量数字noninteger的整数和Slater类型orbitals被执行了。为了增加这些计算的效率，原子二电子的积分以不完全的贝它功能被表示。结果被观察在对文学的好同意。

简介：ThecatalyticactivitiesofMnOx-WO3/TiO2forselectivecatalyticreduction(SCR)ofNOwithNH3wereinvestigatedinawiderangeoftemperatureandreactioncondition.ItyieldedaNOxconversionof80.3%-99.6%andaN2productselectivityof100%-98.7%during100°Cto350°Catgashourlyspacevelocity(GHSV)=18900h-1.Inthepresenceof0.01%SO2and6%H2Oat120°C,theNOxconversioncanmaintain98.5%.At300°Candwith0.07%SO2inreactantstream,theNOxconversionstabilizedat99%ashighasthecommercialV-W/TiO2catalyst'slevel.Thesteady-statekineticsstudyshowsthatO2playedapromotingrole.Inthepresenceoflessthan1.5%O2,NOxconversioncanincreasesharplywiththeincreaseofO2concentration.ThereactionorderwaszerowithrespecttoNH3andfirstwithrespecttoNOwithexcessO2andH2O.Thekineticsactiveenergy(Ea)ofMn-W/TiO2wascalculatedtobe6.24kJ/molaccordingtothekineticexperimentatvarioustemperatures,muchlowerthanthoseofothercatalystsreportedintheliterature.Mn-W/TiO2isanexcellentcatalystforSCRofNOwithNH3bynow.

简介：Anovelsupportedliquidphasefilmcatalyst:SupportedPdCl2-(n-C4H9)4N+Cl-moltensaltswasfoundtobeaneffectivecatalystwithgoodstabilityforselectivehydrodechlorinationofCCl2F2(CFC-12)toitsalternativesCH2F2andCHClF2.AdditionofCoCl2,GaCl3andCuCl2toPdCl2-(n-C4H9)4N+Cl-modifiesthecatalyticperformanceofsupportedmoltensalts.