{"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":5,"startPagecode":1},"records":[{"abstractinfo":"太阳能高效转化和利用是实现能源结构调整、节能减排、保障社会健康发展的重要途径.光解水制氢是实现太阳能转化成化学能,解决能源需求和环境污染一个理想方法,其中水氧化反应是制约太阳能转化的关键.近几十年来,科学家们一直致力于开发高效、稳定的水氧化催化剂,以实现高效水分解获得太阳能转化为化学能所需的质子和电子.在众多水氧化催化剂中,基于Ru的分子催化剂因其结构简单、效果突出,受到人们广泛关注.本文报道了一系列Ru-bda类型的单核Ru催化剂,通过在核心配体上进行Br取代,获得三个新催化剂2,3,5,[Ru(Ln)(picoline)2](H2L1=4-溴-2,2′-联吡啶-6,6′-二羧酸(4-Br-bda), picoline =4-甲基吡啶,2；H2L2=4,4′-二溴-bda,3)和[Ru(L1)(isoquinoline)2]5(isoquinoline =异喹啉),并对其结构进行全面的表征.电化学结果表明,在核心配体中引入Br原子导致催化剂氧化中心的氧化电位有所增加,其原因是取代基Br的吸电子能力降低了中心金属Ru的电子云密度,从而使其氧化电位升高.在催化水氧化反应中,以硝酸铈铵为氧化剂,在pH =1.0的水溶液中对催化剂1-5的催化水氧化活性进行研究.研究发现反应随着取代基Br的引入,催化剂催化水氧化活性逐渐降低,说明在核心配体上的引入吸电子基团不利于Ru-bda型催化剂催化活性的提高.为了深入了解Br取代基效应对催化剂活性的影响,本文重点研究了催化剂1-5的动力学过程和催化水氧化机理.在酸性条件下,通过利用紫外-可见吸收光谱仪研究氧化剂Ce(IV)在360 nm处的紫外吸收变化,进而阐明催化剂催化水氧化的反应机理.保持氧化剂Ce(IV)的初始浓度为1.5 mmol/L,改变催化剂的浓度为0.1μmol/L至6.0μmol/L,对反应最初10 s的数据进行线性拟合和对数计算,分别得到的催化剂1-5的反应级数为2.08,1.79,1.61,2.19和1.90,这表明催化剂2和3与催化剂1的反应机理有所不同.由于催化剂1发生二级反应即在催化水氧化过程中发生双分子间的自由基耦合反应,而催化剂2和3的反应级数均小于2,说明核心配体上的Br取代基的吸电子效应导致催化剂2和3的反应机理发生改变,在水氧化反应过程中部分催化剂2和3分子发生了单分子反应,即水分子亲核进攻机理.当轴向配体由4-甲基吡啶替换为异喹啉时,对比催化剂4和5的催化水氧化活性和动力学研究,也可以得到类似的结果.但与催化剂2和3相比,催化剂5的反应级数降低不明显,说明催化体系中只有一部分分子发生一级反应,大部分分子发生二级反应.这说明在以化合物5为催化剂的水氧化体系中,除了核心配体上Br的吸电子效应对催化剂机理产生影响之外,轴向配体的异喹啉的π-π堆积效应也有重要影响(异喹啉的π-π堆积效应能够促进单核催化剂发生二级反应),并且后者产生的影响占
　　主导位置,从而导致催化剂5的反应级数降低的不明显.","authors":[{"authorName":"刘昭","id":"0742a266-1275-46fe-88ab-9da9f9a7f6e1","originalAuthorName":"刘昭"},{"authorName":"高岩","id":"674d65ce-3c24-477e-9431-042f9f30cd09","originalAuthorName":"高岩"},{"authorName":"于泽","id":"99a3b2bd-0a7a-440d-93d3-24a55c4ed7f3","originalAuthorName":"于泽"},{"authorName":"张敏","id":"21cbe90f-b54f-4ecd-b7d0-b3837e3bef57","originalAuthorName":"张敏"},{"authorName":"刘建辉","id":"01c5d269-6d5a-48f3-99b3-3684f90f0c2d","originalAuthorName":"刘建辉"}],"doi":"10.1016/S1872-2067(15)60895-6","fpage":"1742","id":"f4c41439-f2a5-44b8-91b9-8804737affce","issue":"10","journal":{"abbrevTitle":"CHXB","coverImgSrc":"journal/img/cover/CHXB.jpg","id":"18","issnPpub":"0253-9837","publisherId":"CHXB","title":"催化学报 "},"keywords":[{"id":"bcf1664f-dba5-44ef-8a0b-3baea842e509","keyword":"水氧化","originalKeyword":"水氧化"},{"id":"3b37d54b-b9b2-4930-a525-5a000973f3cd","keyword":"Ru-bda型催化剂","originalKeyword":"Ru-bda型催化剂"},{"id":"82665154-a193-4a12-9092-74a26b397423","keyword":"溴取代","originalKeyword":"溴取代"},{"id":"07a62fe9-774b-4635-8817-fa62b59e69bc","keyword":"吸电子效应","originalKeyword":"吸电子效应"},{"id":"42ce301a-5d93-49af-8b6f-a38f162ca616","keyword":"动力学研究","originalKeyword":"动力学研究"}],"language":"zh","publisherId":"cuihuaxb201510013","title":"溴的吸电子效应对Ru-bda（H2bda =2,2′-联吡啶-6,6′-二羧基）型催化剂催化水氧化的性能影响","volume":"","year":"2015"},{"abstractinfo":"多溴联苯醚(PBDEs)同系物有209种,溴取代数和位置不同,对其空间结构稳定性有影响,PBDEs分子平面可能会发生扭转,继而影响它们的物理化学性质,因此研究最稳定的存在构型及溴取代对PBDEs平面结构的影响尤为重要.本文以多溴联苯醚为研究对象,通过Gaussian03软件在B3LYP/6-31G*水平下运用量子化学方法分别对PBDEs进行强制平面结构优化和非平面结构优化,并对数据进行分析得出Br取代对PBDEs分子结构的影响.结果表明,所考察的PBDEs均为非平面结构更稳定,即Br取代会引起PBDEs平面结构扭转.从分子的量子化学参数分析,非平面结构优化的PBDEs的醚键键角(θc-o-c)变小,1,1'位键长(Rc1-o、Ro-c1')和6,6'位键长(Rc6-*、Rc6'-)增大,偶极距μ值增大,但二面角(D)大小与Rc6-* 、Rc6'-无明显变化规律.","authors":[{"authorName":"薛秀玲","id":"c8b3b230-1e4b-4b37-b071-14d402098b1e","originalAuthorName":"薛秀玲"},{"authorName":"吴志渊","id":"d0995f35-a1a9-4d5d-a95c-771802d3d880","originalAuthorName":"吴志渊"},{"authorName":"李吉安","id":"d7d24cfa-4aad-4f7a-af9d-06eaa16ff8fd","originalAuthorName":"李吉安"},{"authorName":"马蕊","id":"ca420f42-db4b-472d-9913-5904fef9095f","originalAuthorName":"马蕊"}],"doi":"10.7524/j.issn.0254-6108.2017.01.2016042605","fpage":"133","id":"de75562e-f442-45e5-aaf2-2efce4043664","issue":"1","journal":{"abbrevTitle":"HJHX","coverImgSrc":"journal/img/cover/HJHX.jpg","id":"43","issnPpub":"0254-6108","publisherId":"HJHX","title":"环境化学 "},"keywords":[{"id":"d704f0ac-111a-4641-ba86-0de8ebb5399a","keyword":"多溴联苯醚(PBDEs)","originalKeyword":"多溴联苯醚(PBDEs)"},{"id":"2799a209-d34a-4604-a072-5d506be6ff9a","keyword":"Br取代","originalKeyword":"Br取代"},{"id":"63106ec9-ee6d-46dd-82ae-53520f876b20","keyword":"非平面结构优化","originalKeyword":"非平面结构优化"},{"id":"163a23fc-731c-47aa-a431-1cbfb512473b","keyword":"强制平面结构优化","originalKeyword":"强制平面结构优化"},{"id":"2393c719-a0db-4ec5-b36d-33aa25795c52","keyword":"量子化学参数","originalKeyword":"量子化学参数"}],"language":"zh","publisherId":"hjhx201701014","title":"不同溴取代对多溴联苯醚分子平面结构的影响","volume":"36","year":"2017"},{"abstractinfo":"以溴化 N-烷基取代咪唑离子液体为反应介质,采用离子热法合成了AEL型硅磷酸铝分子筛,并考察了不同离子液体和反应物中正硅酸四乙酯的添加量对分子筛结构的影响. 结果表明,以1-乙基-3-甲基溴化咪唑为反应介质,并引入正硅酸四乙酯时,产物为含有未知结构晶体的AEL型硅磷酸铝分子筛,而且随着正硅酸四乙酯添加量的增大,未知结构晶体增多. 以 1-己基-3-甲基溴化咪唑为反应介质时,产物为高结晶度的上述未知结构晶体.","authors":[{"authorName":"徐云鹏","id":"f51f7b16-d7e4-4570-87d5-e2d3150e3375","originalAuthorName":"徐云鹏"},{"authorName":"田志坚","id":"bc1d0730-8008-431d-9ec9-ffd7041298b1","originalAuthorName":"田志坚"},{"authorName":"徐竹生","id":"20c12547-2125-4f32-9db3-6ad5988cbfb9","originalAuthorName":"徐竹生"},{"authorName":"王炳春","id":"4ee295e7-7bea-4bdc-8121-5d3823ddc02b","originalAuthorName":"王炳春"},{"authorName":"李鹏","id":"3fdc3bf1-3c65-4525-ad68-cc0e894d90d2","originalAuthorName":"李鹏"},{"authorName":"王少君","id":"2ea08ed0-7f2a-4fb7-93b8-d63123b4536c","originalAuthorName":"王少君"},{"authorName":"胡玥","id":"f7603dee-a5e5-454f-a1f2-f984d10c49f7","originalAuthorName":"胡玥"},{"authorName":"马英冲","id":"4cf9f97b-a174-42a8-8747-0ccb8a61d74a","originalAuthorName":"马英冲"},{"authorName":"李坤兰","id":"6dd596c8-efaa-4e8d-be68-baebc839da73","originalAuthorName":"李坤兰"},{"authorName":"刘彦军","id":"e2f3da21-954b-4a0d-b866-261862d49d55","originalAuthorName":"刘彦军"},{"authorName":"余加祐","id":"e69400d8-cc61-459c-ad7f-10f6d881a8f8","originalAuthorName":"余加祐"},{"authorName":"林励吾","id":"0a6e1abb-e90c-435f-86e2-e7aabafadc5c","originalAuthorName":"林励吾"}],"doi":"","fpage":"446","id":"bb869182-76c8-448b-8d75-a3e2148eb1c7","issue":"6","journal":{"abbrevTitle":"CHXB","coverImgSrc":"journal/img/cover/CHXB.jpg","id":"18","issnPpub":"0253-9837","publisherId":"CHXB","title":"催化学报 "},"keywords":[{"id":"78ca1154-aff0-4c39-83e3-e70cd6dc7a75","keyword":"离子热合成","originalKeyword":"离子热合成"},{"id":"587a6d9a-0536-4ab3-b557-e2314b98a57c","keyword":"离子液体","originalKeyword":"离子液体"},{"id":"a68817ba-f6ef-4110-a163-59773ba087c6","keyword":"硅磷酸铝分子筛","originalKeyword":"硅磷酸铝分子筛"},{"id":"15087710-4320-4303-b8ba-29bc5ef34545","keyword":"AEL结构","originalKeyword":"AEL结构"}],"language":"zh","publisherId":"cuihuaxb200506003","title":"溴化 N-烷基取代咪唑中离子热合成硅磷酸铝分子筛","volume":"26","year":"2005"},{"abstractinfo":"以水杨酸甲酯为原料,先经溴化反应制得5-溴水杨酸甲酯,再经肼解反应制得5-溴-2-羟基苯甲酰肼,再与取代芳香醛缩合反应,制得7种5-溴-2-羟基苯甲酰基取代芳醛腙,其中3种为新化合物. 化合物的结构经IR、1H NMR、MS与元素分析测试技术表征确证. 抑菌测试表明,该类化合物对不同菌株的抑菌活性具有明显的选择性;在质量浓度为0.05%时,上述化合物对白色念珠菌、枯草芽孢杆菌的抑菌率高达100%,具有强抑菌活性,是一类极具潜力的抗真菌、抗革兰氏阳性菌的化合物. 5-溴-2-羟基苯基-3′,5′-二溴-2-羟基苯甲醛腙的抗菌活性接近广谱高效杀菌剂三氯生. 构效分析表明,化合物的抑菌活性与Ar环及其取代基性质有关,引入呋喃环、Ar环邻、对位引入-OH、-OCH_3等供电基容易导致化合物抑菌活性降低,Ar环的间位引入Cl、Br等卤素原子能够提高化合物的抑菌活性.","authors":[{"authorName":"张明","id":"97d30c87-60ec-40a0-b1e9-d2a80abe8843","originalAuthorName":"张明"},{"authorName":"卢俊瑞","id":"0cba9e9d-6254-47ed-b840-592c3c32219f","originalAuthorName":"卢俊瑞"},{"authorName":"辛春伟","id":"c97e2980-637b-467d-b211-79de6330190d","originalAuthorName":"辛春伟"},{"authorName":"刘芳","id":"e54df151-48a8-483a-836e-af00866ccb6a","originalAuthorName":"刘芳"},{"authorName":"周昌明","id":"f397109b-1325-4737-8a3a-9fb27c184c52","originalAuthorName":"周昌明"},{"authorName":"鲍秀荣","id":"782669a5-d7cf-471f-8357-62de51f2c35d","originalAuthorName":"鲍秀荣"},{"authorName":"陈丽然","id":"47ded44b-aceb-445d-99ec-bef85c884c10","originalAuthorName":"陈丽然"}],"doi":"10.3969/j.issn.1000-0518.2009.12.002","fpage":"1386","id":"08683ec1-55ff-4e19-b35b-58d4ad607cbc","issue":"12","journal":{"abbrevTitle":"YYHX","coverImgSrc":"journal/img/cover/YYHX.jpg","id":"73","issnPpub":"1000-0518","publisherId":"YYHX","title":"应用化学"},"keywords":[{"id":"77fa438f-eb69-4496-9101-6be3463c8ade","keyword":"溴羟基苯甲酰基取代芳醛腙","originalKeyword":"溴羟基苯甲酰基取代芳醛腙"},{"id":"f44ca3e9-7845-4c39-b767-08b0a0ba5a64","keyword":"水杨酸甲酯","originalKeyword":"水杨酸甲酯"},{"id":"e738e32e-1bd1-4c4f-8e56-e6505bc5c4f6","keyword":"合成","originalKeyword":"合成"},{"id":"7f92baea-8a09-4779-b801-7d1a8fcacc2a","keyword":"表征","originalKeyword":"表征"},{"id":"0a1b3983-4957-48c8-a2b0-007db4e1fda0","keyword":"抑菌活性","originalKeyword":"抑菌活性"}],"language":"zh","publisherId":"yyhx200912002","title":"5-溴-2-羟基苯甲酰基取代芳醛腙的合成、表征及抑菌活性","volume":"26","year":"2009"},{"abstractinfo":"用有机蒙脱石(OMMT)部分取代十溴二苯乙烷(DBDPE)制备聚丙烯/有机蒙脱石-十溴二苯乙烷/三氧化二锑(PP/OMMT-DBDPE/Sb2 O3)复合材料,采用SEM、TGA和锥形量热仪对复合材料的结构、热稳定性和阻燃性进行表征.结果表明,对于组成为PP/22.5％DBDPE/7.5％Sb2O3的复合材料,当用50％有机蒙脱石取代十溴二苯乙烷后,复合材料的初始分解温度和热分解温度分别提高了8℃、13℃,600℃的残留量达到13.71％,提高了3.96％.PP/11.25％OMMT-11.25％DBDPE/7.5％Sb2O3复合材料的热释放速率峰值(PHRR)为374 kW/m2,与PP/22.5％DBDPE/7.5％ Sb2O3复合材料(459 kW/m2)相比下降了19％.PP/11.25％ OMMT-11.25％ DBDPE/7.5％Sb2O复合材料的火灾性能指数(FPI)为0.185 s·m2/kW,相比PP/22.5％DBDPE/7.5％Sb2O3复合材料提高了36％.有机蒙脱石部分取代十溴二苯乙烷后聚丙烯复合材料的热稳定性及阻燃性能都明显改善.","authors":[{"authorName":"卢红","id":"e8e85293-ec12-4390-b295-d63c129360e9","originalAuthorName":"卢红"},{"authorName":"陆桂焕","id":"4447ef6b-4b1f-48dd-b610-1025e4ddaa89","originalAuthorName":"陆桂焕"},{"authorName":"谢襄漓","id":"d355aca3-8b37-47dd-8495-f73a75581092","originalAuthorName":"谢襄漓"},{"authorName":"王林江","id":"1f3e1a0c-8916-4077-9f6a-f9c3126cfa95","originalAuthorName":"王林江"}],"doi":"10.11896/j.issn.1005-023X.2016.02.017","fpage":"71","id":"7677f132-9780-49a1-9f31-8f202c5f79c3","issue":"2","journal":{"abbrevTitle":"CLDB","coverImgSrc":"journal/img/cover/CLDB.jpg","id":"8","issnPpub":"1005-023X","publisherId":"CLDB","title":"材料导报"},"keywords":[{"id":"de07617f-8e3c-41d4-a5ae-1ccbbc59ba72","keyword":"聚丙烯","originalKeyword":"聚丙烯"},{"id":"9ebdc368-801a-4836-a69c-96453772a413","keyword":"蒙脱石","originalKeyword":"蒙脱石"},{"id":"0244812d-bfef-468a-a5e3-cf640de14b71","keyword":"十溴二苯乙烷","originalKeyword":"十溴二苯乙烷"},{"id":"e7b5855c-5114-45ff-9075-24ecae16c7c1","keyword":"部分取代","originalKeyword":"部分取代"},{"id":"32182dce-5d07-48d2-8ef3-beb655b4587b","keyword":"协同阻燃","originalKeyword":"协同阻燃"}],"language":"zh","publisherId":"cldb201602017","title":"蒙脱石部分取代十溴二苯乙烷体系对聚丙烯的阻燃性能","volume":"30","year":"2016"},{"abstractinfo":"由廉价的手性氨基醇与3,5-二溴或3,5-二碘水杨醛缩合得到配体,配体与VO(acac)2按一定比例络合形成络合物催化剂,考察了室温下该催化剂对芳基甲基硫醚不对称氧化反应的催化性能. 结果表明,当VO(acac)2/配体摩尔比为1/2, 并且以H2O2作为氧源时,催化剂具有较高的活性和中等至很高的对映选择性. 与(S)-苯丙氨醇和(R)-亮氨醇衍生得到的配体相比,由(S)-缬氨醇得到的配体具有更高的对映选择性. 在缓慢滴加H2O2的条件下,以3,5-二碘水杨醛和(S)-缬氨醇缩合得到的Schiff碱为配体,以苯甲硫醚和对溴苯甲硫醚为底物时,产物的ee值分别为88%和92%. 研究表明,与Fe(acac)3/Schiff碱体系不同,向VO(acac)2/Schiff碱催化体系中加入羧酸或羧酸盐类化合物并不能改善催化剂的催化性能.","authors":[{"authorName":"高爱萍","id":"bc89646a-e08e-4e0a-9406-54eb5cd89dd5","originalAuthorName":"高爱萍"},{"authorName":"王梅","id":"3c37aea7-1431-49ed-a014-0b93516a6679","originalAuthorName":"王梅"},{"authorName":"王东平","id":"19eb722a-4560-43f0-b3aa-5f4123e0ea73","originalAuthorName":"王东平"},{"authorName":"张路","id":"55316720-b2fc-4aee-a54f-5d2748ccb27b","originalAuthorName":"张路"},{"authorName":"刘海彬","id":"a28551fd-4176-4764-bd22-c5c76774ff80","originalAuthorName":"刘海彬"},{"authorName":"田伟","id":"c314e69c-6251-4be8-9938-088b58b5d4bf","originalAuthorName":"田伟"},{"authorName":"孙立成","id":"5713fd0b-d207-45a0-96c9-1cef90962466","originalAuthorName":"孙立成"}],"doi":"","fpage":"743","id":"173ab8b9-b22f-425b-bd32-498554ccbe51","issue":"8","journal":{"abbrevTitle":"CHXB","coverImgSrc":"journal/img/cover/CHXB.jpg","id":"18","issnPpub":"0253-9837","publisherId":"CHXB","title":"催化学报 "},"keywords":[{"id":"fb69848c-8ea3-4429-a114-686b4593cfb7","keyword":"溴","originalKeyword":"溴"},{"id":"8e9d040b-7a84-4b36-9cd1-87fe53440842","keyword":"碘","originalKeyword":"碘"},{"id":"f7274c61-1c05-4503-b877-74ed6e373693","keyword":"Schiff碱","originalKeyword":"Schiff碱"},{"id":"3c4928ae-f8aa-4a3e-940d-78c98e8dc374","keyword":"手性亚砜","originalKeyword":"手性亚砜"},{"id":"4872bd78-7d0a-4b01-9af6-b00a09ada810","keyword":"钒","originalKeyword":"钒"},{"id":"3e290697-1081-4d73-99b2-0ff8b5063c68","keyword":"硫醚","originalKeyword":"硫醚"},{"id":"04109e39-cba9-4694-9128-1c5b9ce46d92","keyword":"不对称氧化","originalKeyword":"不对称氧化"}],"language":"zh","publisherId":"cuihuaxb200608019","title":"二溴和二碘取代的手性Schiff碱-钒(Ⅳ)络合物催化硫醚不对称氧化","volume":"27","year":"2006"},{"abstractinfo":"选取含不同取代基的甲苯在不同条件下与NBS反应,考察了溶剂极性、取代基的电子效应和温度等因素对反应结果的影响,结果表明,取代反应的区域选择性强烈地依赖于反应溶剂和取代基的电子效应及其数量.随反应溶剂极性的增强,芳环上亲电取代产物的比例增加;随芳环上取代基的推电子能力的增大,亲电取代反应的优势愈加明显;相反,则有利于α-位上的游离基取代.在此基础上,研究了溴化Q0的合成方法,形成了一条新的、简便的溴化Q0的合成路线,收率达86%以上.","authors":[{"authorName":"冯娟","id":"90af554a-246a-482d-9e10-94d8cf6f3fb6","originalAuthorName":"冯娟"},{"authorName":"罗啸","id":"fa1925fa-9391-4d78-b3ea-af544bc6627f","originalAuthorName":"罗啸"},{"authorName":"穆云","id":"e9bb6a9c-1c10-4385-b1ea-f0adaf830831","originalAuthorName":"穆云"},{"authorName":"刘守信","id":"50bd20bc-2d2a-4b48-9b4c-a1f168c67712","originalAuthorName":"刘守信"}],"doi":"10.3969/j.issn.1000-0518.2007.01.025","fpage":"111","id":"79e29a4e-7a23-4c23-9ff7-40dcffce038c","issue":"1","journal":{"abbrevTitle":"YYHX","coverImgSrc":"journal/img/cover/YYHX.jpg","id":"73","issnPpub":"1000-0518","publisherId":"YYHX","title":"应用化学"},"keywords":[{"id":"4b8e59d9-4069-4e7c-bc0a-f0a8b0709380","keyword":"NBS","originalKeyword":"NBS"},{"id":"732f1013-450a-415a-8acf-7e7ae2b8a67f","keyword":"取代苯","originalKeyword":"取代苯"},{"id":"80111a89-b1db-4369-ae95-a444c9a8dcac","keyword":"亲电取代","originalKeyword":"亲电取代"},{"id":"2304e096-176b-4def-8893-4128fd3adbbc","keyword":"溴化Q0","originalKeyword":"溴化Q0"}],"language":"zh","publisherId":"yyhx200701025","title":"NBS与取代苯的亲电反应及其应用","volume":"24","year":"2007"},{"abstractinfo":"研究了聚(4-甲基戊烯-1)、有规及无规聚丙烯的溴化反应。反应以自由基机理进行,溴取代主要发生在主链上的叔氢原子上。溴化反应改变了三种聚合物的溶解和物理性能。溴化产物的透氧系数P_(v_2)下降,分离系数α_(O(?)N)有所提高,有可能满足某些特殊气体分离膜的要求。","authors":[{"authorName":"张可达","id":"fd77f90a-3ab9-4524-832e-c1fc4a73e955","originalAuthorName":"张可达"},{"authorName":"秦中黎","id":"e54734e0-653e-45eb-af1a-5d4fd515a6fc","originalAuthorName":"秦中黎"}],"categoryName":"|","doi":"","fpage":"546","id":"379b9c9b-cab8-4e57-b08b-bd4187a99f40","issue":"6","journal":{"abbrevTitle":"CLYJXB","coverImgSrc":"journal/img/cover/CLYJXB.jpg","id":"16","issnPpub":"1005-3093","publisherId":"CLYJXB","title":"材料研究学报"},"keywords":[{"id":"88cb3d50-4fea-43b1-9eb8-f512b602b7a0","keyword":"溴化","originalKeyword":"溴化"},{"id":"8d00e1f7-4417-48d0-b17e-efd13aa8cd0a","keyword":"oxygen enrichment membrane","originalKeyword":"oxygen enrichment membrane"},{"id":"cb208b51-3a9b-4a4f-8ebb-6f11c91af206","keyword":"polypropylene","originalKeyword":"polypropylene"},{"id":"4dc2a6c8-8c9d-450c-a0b9-8013c4794485","keyword":"poly(4-methyl-pentene-1)","originalKeyword":"poly(4-methyl-pentene-1)"}],"language":"zh","publisherId":"1005-3093_1990_6_9","title":"几种溴化改性聚烯烃的富氧性能","volume":"4","year":"1990"},{"abstractinfo":"采用傅立叶变换红外光谱法(FT-IR)结合差示扫描量热法(DSC)研究了不同的溴含量对四溴双酚A环氧树脂/二氨基二苯砜(TBBPAER/DDS)固化体系的固化反应速率常数k、转化率α及固化产物的玻璃化温度(Tg)的影响.理论上,随着取代基体积和极性的增加,k值、α值及Tg值均应增加,但实验结果显示却与此相反,由此得出结论:溴含量所引起的空间位阻作用对该固化体系的固化过程起着重要的作用.选择环氧树脂的含溴量可以控制反应速度、转化率并得到具有不同Tg值的固化产物.","authors":[{"authorName":"侯文龙","id":"ce81808a-61d0-4d3a-bae9-474e1680fba4","originalAuthorName":"侯文龙"},{"authorName":"巴信武","id":"a257ee1a-4533-42a6-a5e1-34065ab89208","originalAuthorName":"巴信武"},{"authorName":"姚兴芳","id":"1e9bd392-2da0-4b36-9874-d655e2b5c96c","originalAuthorName":"姚兴芳"},{"authorName":"张荣珍","id":"218290d3-4fa5-49dd-ba54-3ab7b5736a5e","originalAuthorName":"张荣珍"},{"authorName":"王继英","id":"a2b31f06-8967-4da7-90bd-2a39f1b06c26","originalAuthorName":"王继英"}],"doi":"","fpage":"140","id":"3d894950-7431-4795-a44f-403d262f7b3c","issue":"1","journal":{"abbrevTitle":"GFZCLKXYGC","coverImgSrc":"journal/img/cover/GFZCLKXYGC.jpg","id":"31","issnPpub":"1000-7555","publisherId":"GFZCLKXYGC","title":"高分子材料科学与工程"},"keywords":[{"id":"253c3de2-1058-4233-b421-587ccb4ec977","keyword":"环氧树脂","originalKeyword":"环氧树脂"},{"id":"65a5057b-0907-4a78-b1a8-ece6a56d5c06","keyword":"四溴双酚A","originalKeyword":"四溴双酚A"},{"id":"92099bf0-1ede-4a11-b9da-60fbe21928e8","keyword":"固化体系","originalKeyword":"固化体系"}],"language":"zh","publisherId":"gfzclkxygc200401036","title":"溴含量对TBBPAER/DDS固化体系的影响","volume":"20","year":"2004"},{"abstractinfo":"在胶乳状态下制得不同溴含量的溴化天然橡胶产物,并采用傅里叶红外光谱和1H NMR核磁共振测试技术对胶乳法溴化天然橡胶(BNR)进行了结构表征,用扫描电子显微镜对BNR的形貌进行了观察,考察了不同溴含量BNR的溶解性能和氮含量. 红外光谱分析表明,天然胶乳溴化反应时发生了溴化取代和加成反应;1H NMR分析证实存在 CC 双键加成和亚甲基、甲基的溴化取代. 随着溴含量的增加,BNR产物逐渐变得硬而脆,最终呈粉末状,且粒径减小. 同一溴化天然橡胶产物在不同溶剂中的溶解能力由小到大依次为:四氯化碳、苯<甲苯、二甲苯<四氢呋喃<三氯甲烷<环己酮;在同一有机溶剂中BNR的溶解性能则随着溴含量的增加而增大. BNR产物的含氮量随着溴含量的增加而减小,当溴含量为42%时,氮含量减小至0.10%.","authors":[{"authorName":"薛行华","id":"2cce79ba-53f0-461c-9d4b-bdc9be9c0478","originalAuthorName":"薛行华"},{"authorName":"凌军","id":"7c89f8ad-fe03-4eca-a63a-242f687bd453","originalAuthorName":"凌军"},{"authorName":"吴耀辉","id":"ed11007b-6e4a-41b0-aa99-f1038dbc4a68","originalAuthorName":"吴耀辉"},{"authorName":"王凤平","id":"e2f1da16-344d-4b8d-b84f-609d8e21cd5c","originalAuthorName":"王凤平"},{"authorName":"符新","id":"932a023d-fc57-4d50-85e7-acc13ddec17f","originalAuthorName":"符新"}],"doi":"10.3724/SP.J.1095.2010.90492","fpage":"514","id":"781398f9-56fd-4e86-a2d5-a3fc2a014ee7","issue":"5","journal":{"abbrevTitle":"YYHX","coverImgSrc":"journal/img/cover/YYHX.jpg","id":"73","issnPpub":"1000-0518","publisherId":"YYHX","title":"应用化学"},"keywords":[{"id":"5c26c9a0-679b-449c-b201-4559e76e6e22","keyword":"溴化天然橡胶","originalKeyword":"溴化天然橡胶"},{"id":"6a952f80-f58e-413b-9dba-37b3dd1ac463","keyword":"天然胶乳","originalKeyword":"天然胶乳"},{"id":"7a5d6ae0-d047-4ac6-91f8-ad825707ded8","keyword":"微观结构","originalKeyword":"微观结构"},{"id":"73dff98f-faea-4788-ad71-49f50d86301a","keyword":"性能","originalKeyword":"性能"}],"language":"zh","publisherId":"yyhx201005004","title":"胶乳法溴化天然橡胶的结构与性能","volume":"27","year":"2010"}],"totalpage":400,"totalrecord":3997}