有色金属工程, 2015, 5(5): 79-84. doi: 10.3969/j.issn.2095-1744.2015.05.019
大脚岭铅锌矿尾矿库重金属污染迁移的无损探测与评价
张文静 1, , 何川 2, , 魏威 {"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":5,"startPagecode":1},"records":[{"abstractinfo":"制备了一系列不同W,Mn含量的Na-W-Mn/SiO2催化剂,并进行了其催化甲烷氧化偶联反应性能评价和XPS,XRD表征.研究结果表明,W和Mn的含量分别为2.2%≤W≤8.9%和0.5%≤Mn≤3%时,催化剂具有较好的甲烷氧化偶联反应性能.Mn的表面浓度与甲烷的转化率和乙烯的选择性有较好的对应关系,W的表面浓度与乙烷的选择性有一定的关联,据此提出Na-O-Mn和Na-O-W都是甲烷氧化偶联反应的活性中心.反应的活性相是Na2WO4,Na2W2O7和Mn2O3.","authors":[{"authorName":"季生福","id":"4e3037f0-1bf5-4e8c-8025-97456c4fdfee","originalAuthorName":"季生福"},{"authorName":"李树本","id":"ffd265b9-eb43-43e2-83a5-26a1d8921bcd","originalAuthorName":"李树本"},{"authorName":"张兵","id":"a8b703e4-83a8-480f-98a4-9e1e751de012","originalAuthorName":"张兵"},{"authorName":"刘育","id":"d4fc0610-ba71-4199-b015-44159e281295","originalAuthorName":"刘育"},{"authorName":"许传芝","id":"2574dfc5-39be-4732-8a0b-9479c3e55aa7","originalAuthorName":"许传芝"}],"doi":"","fpage":"608","id":"2e5a98a1-cf4e-466d-9fe6-d831eb957b2a","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":"5524d609-a85f-4ac5-9728-dbec3adcf116","keyword":"钨酸钠","originalKeyword":"钨酸钠"},{"id":"50dddf3e-6d4b-484a-82f4-42dc4dadf9fc","keyword":"氧化锰","originalKeyword":"氧化锰"},{"id":"75e31647-442f-45ff-ade3-27dee24f9e69","keyword":"担载型催化剂","originalKeyword":"担载型催化剂"},{"id":"aad0855b-dfda-4297-a399-38154ccdcf13","keyword":"甲烷","originalKeyword":"甲烷"},{"id":"58838224-14d5-4f9c-af1f-6cd4cfd31cb0","keyword":"氧化偶联","originalKeyword":"氧化偶联"}],"language":"zh","publisherId":"cuihuaxb199906008","title":"Na-W-Mn/SiO2催化剂体系中W和Mn对甲烷氧化偶联反应的作用","volume":"20","year":"1999"},{"abstractinfo":"通过原位担载法将铁系催化剂担载于煤表面,考察了催化剂前驱体的相态、配位环境以及在载体表面的分散状态. 采用X射线吸收精细结构和X射线衍射法对原位担载型铁系催化剂前驱体进行了表征. 结果表明,催化剂前驱体在煤表面以非晶态、高分散的形式存在,其化学组成主要为FeOOH, 且催化剂前驱体的分散程度与载体煤的物理化学性质有关.","authors":[{"authorName":"郭劼蘅","id":"1779abaa-40bb-4c97-a8b6-8a4e8545f32a","originalAuthorName":"郭劼蘅"},{"authorName":"杨建丽","id":"d08ff640-83bf-4212-b838-c2f04d95b941","originalAuthorName":"杨建丽"},{"authorName":"刘振宇","id":"b55fb8a7-94f4-4250-90f9-d7c0093ab0c2","originalAuthorName":"刘振宇"}],"doi":"","fpage":"165","id":"8d33afbd-822d-4798-a794-709d9cf2e879","issue":"2","journal":{"abbrevTitle":"CHXB","coverImgSrc":"journal/img/cover/CHXB.jpg","id":"18","issnPpub":"0253-9837","publisherId":"CHXB","title":"催化学报 "},"keywords":[{"id":"d143a370-9657-4afd-88f6-0ee5683028fc","keyword":"硫化铁","originalKeyword":"硫化铁"},{"id":"33ef04b0-b5b8-4789-b658-7d1a80e8785e","keyword":"原位担载","originalKeyword":"原位担载"},{"id":"baba05ed-911d-48fa-8236-e2f73a89a1b5","keyword":"催化剂前驱体","originalKeyword":"催化剂前驱体"},{"id":"d8446c89-4b68-4ed1-9f23-338d42cf7618","keyword":"煤液化","originalKeyword":"煤液化"},{"id":"664abb82-8c8f-4bc4-8eb9-cbbc8bb13e17","keyword":"X射线吸收精细结构","originalKeyword":"X射线吸收精细结构"},{"id":"c2c7ed1e-b815-4b51-979d-f7e61d0ac7eb","keyword":"X射线衍射","originalKeyword":"X射线衍射"}],"language":"zh","publisherId":"cuihuaxb200002019","title":"原位担载型煤直接液化催化剂的表征","volume":"21","year":"2000"},{"abstractinfo":"分别对Al2O3和SiO2担载的不同含量铱(Ir)催化剂进行了H2程序升温还原、 CO微量吸附量热和红外研究.结果表明,还原后, Ir/Al2O3上存在金属态Ir0和氧化态Irδ+两种物种, CO在催化剂表面主要以线式和孪生吸附态存在,测量的CO吸附热为两种吸附形式的平均吸附热.提高还原温度和Ir担载量, Ir/Al2O3表面CO线式吸附物种的比例增加,从而导致CO吸附热值的升高.而在Ir/SiO2上Ir物种主要为金属态Ir0, CO吸附都以线式吸附为主,在所考察的条件下CO吸附热随Ir担载量和还原温度的变化不明显.","authors":[{"authorName":"王兴棠","id":"f19b8459-3271-4f29-91f7-f99b6858370e","originalAuthorName":"王兴棠"},{"authorName":"李林","id":"2add4a2c-2cd8-402a-b2f2-2f6aa506a7b6","originalAuthorName":"李林"},{"authorName":"黄延强","id":"bf1194d6-3755-4dbd-bed5-d92abb8ceeb2","originalAuthorName":"黄延强"},{"authorName":"王晓东","id":"64b9bef4-8cff-4eb1-b9d6-a47eda8b61c7","originalAuthorName":"王晓东"},{"authorName":"张涛","id":"450ec572-5c94-496d-932c-84a074c25b40","originalAuthorName":"张涛"}],"doi":"","fpage":"1231","id":"74ae28a8-fec3-4ac6-972c-3d5966144822","issue":"12","journal":{"abbrevTitle":"CHXB","coverImgSrc":"journal/img/cover/CHXB.jpg","id":"18","issnPpub":"0253-9837","publisherId":"CHXB","title":"催化学报 "},"keywords":[{"id":"0f11dd7c-97cc-494e-857f-63af96b16144","keyword":"程序升温还原","originalKeyword":"程序升温还原"},{"id":"c6e07710-4cab-4c84-af4c-4d126f1cf707","keyword":"吸附量热","originalKeyword":"吸附量热"},{"id":"97ff8c4a-466e-468c-a913-5d20b4588d43","keyword":"红外光谱","originalKeyword":"红外光谱"},{"id":"9d0ce2e3-4497-44ef-95d4-da13bd5f6cd9","keyword":"铱","originalKeyword":"铱"},{"id":"dd670033-22c5-42f8-97c7-f68fe654da1e","keyword":"氧化铝","originalKeyword":"氧化铝"},{"id":"e5c0706a-7770-4726-adc6-40601285da35","keyword":"氧化硅","originalKeyword":"氧化硅"}],"language":"zh","publisherId":"cuihuaxb200812009","title":"担载型铱催化剂上CO吸附量热和红外光谱研究","volume":"29","year":"2008"},{"abstractinfo":"采用粉末X射线衍射(PXRD)鉴定了一种载担型镍催化剂的晶体物相,并应用化学计量学峰形拟合法和Scherrer法计算了其中镍的品粒尺寸.其主要物相鉴定结果为:镍(Ni)、氧化镍或绿镍矿(NiO)及碳或石墨(C).该催化剂还含有未予鉴定的次要物相.镍(111)晶面晶粒尺寸约为9.3nm.","authors":[{"authorName":"李瑞峰","id":"8965cb89-b15c-4b64-86d5-88ef02da9812","originalAuthorName":"李瑞峰"},{"authorName":"王刚","id":"9ec1a4a6-f2f4-40e9-9ac8-49eb7aeaf611","originalAuthorName":"王刚"},{"authorName":"李建忠","id":"102bc50e-460c-481b-812f-2d7946141ef3","originalAuthorName":"李建忠"},{"authorName":"王亚静","id":"d663ce7f-60b9-45f6-9d5f-3bb37dced3f6","originalAuthorName":"王亚静"},{"authorName":"李响","id":"de110b9a-43d4-4d76-ac84-2dc18bfed3a9","originalAuthorName":"李响"}],"doi":"10.3969/j.issn.1001-4381.2010.z1.043","fpage":"203","id":"91c94b1f-b47c-4575-bb74-bc3d1b0dfff2","issue":"z1","journal":{"abbrevTitle":"CLGC","coverImgSrc":"journal/img/cover/CLGC.jpg","id":"9","issnPpub":"1001-4381","publisherId":"CLGC","title":"材料工程"},"keywords":[{"id":"406eaa7d-946a-4617-aa82-b50f89440d98","keyword":"载担型镍催化剂","originalKeyword":"载担型镍催化剂"},{"id":"e93d667d-d92d-4003-96be-90c3dcba203d","keyword":"晶体物相鉴定","originalKeyword":"晶体物相鉴定"},{"id":"f912fff6-95ce-4d59-b522-53774110b516","keyword":"晶粒尺寸测试","originalKeyword":"晶粒尺寸测试"},{"id":"239bb691-9a6d-43f8-acdd-a92649b01b7a","keyword":"粉末X射线衍射","originalKeyword":"粉末X射线衍射"}],"language":"zh","publisherId":"clgc2010z1043","title":"粉末X射线衍射鉴定一种载担型镍催化剂的晶体物相","volume":"","year":"2010"},{"abstractinfo":"与新鲜Mo/HZSM-5(F)催化剂相比,于973 K以甲烷活化后的Mo/HZSM-5(A)对丙烷芳构化的活性和芳烃选择性都得到显著提高,芳烃的收率从3.35%提高到13.82%.根据催化剂(F)用于甲烷芳构化时存在活性诱导期,结合本实验的丙烷芳构化结果及XRD结果,提出担载于分子筛表面的MoO3经甲烷活化后转化为α-Mo2C后才对烷烃芳构化有较高活性.碳化钼是活性相,它的作用不在于活化烷烃,而是为H聚合为H2并脱附至气相提供\"窗口\"(氢反溢流机理).","authors":[{"authorName":"吕元","id":"f34202e6-374f-4983-85b4-840a4cb5cca7","originalAuthorName":"吕元"},{"authorName":"徐竹生","id":"352fa97e-55c7-4f8c-ba49-202c26c6ca0b","originalAuthorName":"徐竹生"},{"authorName":"林励吾","id":"2289b2d8-84ff-49c5-baac-250b7a2007e0","originalAuthorName":"林励吾"},{"authorName":"臧连发","id":"17dd0369-d243-44b7-b84f-69ef440b4a82","originalAuthorName":"臧连发"},{"authorName":"田志坚","id":"57bb3f8e-af83-4222-b2d1-0981e89e2bb3","originalAuthorName":"田志坚"},{"authorName":"刘伟成","id":"02964464-1e88-4e26-8e8d-1c44755e32d7","originalAuthorName":"刘伟成"},{"authorName":"张涛","id":"64e31125-91be-4928-8b30-11a28b5695cd","originalAuthorName":"张涛"}],"doi":"","fpage":"277","id":"2a466e86-3dcd-4ce1-96cd-c2bb6522a638","issue":"3","journal":{"abbrevTitle":"CHXB","coverImgSrc":"journal/img/cover/CHXB.jpg","id":"18","issnPpub":"0253-9837","publisherId":"CHXB","title":"催化学报 "},"keywords":[{"id":"ebd979a5-2332-4bb1-87a3-081c9a50e98a","keyword":"丙烷","originalKeyword":"丙烷"},{"id":"8ad866c6-5709-405c-bf31-75c6892dcefd","keyword":"芳构化","originalKeyword":"芳构化"},{"id":"b7da6ccb-117a-42e3-b31c-7a658f4d19e4","keyword":"活化","originalKeyword":"活化"},{"id":"365c62e7-f76d-427c-8f4d-8449929d8776","keyword":"氧化钼","originalKeyword":"氧化钼"},{"id":"9c3adc31-53c7-4744-aec1-c26ae63cc381","keyword":"HZsM-5沸石","originalKeyword":"HZsM-5沸石"},{"id":"2064659c-c675-41cd-aa83-605bfd375c0e","keyword":"活化","originalKeyword":"活化"},{"id":"ad990191-b61f-456b-bf95-c5f5c8fb5559","keyword":"碳化钼","originalKeyword":"碳化钼"},{"id":"5a3a1bea-ef06-427c-a62a-173097e301ac","keyword":"甲烷","originalKeyword":"甲烷"}],"language":"zh","publisherId":"cuihuaxb199903021","title":"担载型钼催化剂上的丙烷芳构化","volume":"20","year":"1999"},{"abstractinfo":"考察了整体式担载型Pt基催化剂上国产3号航空煤油(RP-3)的常压裂解反应,着重探讨了添加BaO和SrO助剂对裂解效果的影响,以及裂解时间对积炭量的影响.采用全自动吸附仪、程序升温还原、X射线光电子能谱以及X射线衍射和扫描电镜等方法对催化剂进行了表征.结果表明,在整体式担载型Pt基催化剂上RP-3裂解的总产气量比热裂解提高了39.7％; BaO或SrO助剂的添加又使其总产气量又分别提高了25.6％和37.0％;同时添加BaO和SrO的催化剂,其催化裂解总产气量则提高了96.5％.BaO和SrO助剂均可有效地抑制积炭的生成,而两者间的协同作用,进一步抑制了RP-3催化裂解过程中积炭的生成.","authors":[{"authorName":"焦毅","id":"a3ba7003-39c6-4264-92bd-168e9de6414e","originalAuthorName":"焦毅"},{"authorName":"王佳","id":"6de02f64-ec18-4134-9f3f-dfc6ff13e328","originalAuthorName":"王佳"},{"authorName":"秦莉晓","id":"b728f60f-396b-4c3e-9ad5-f0671e415d51","originalAuthorName":"秦莉晓"},{"authorName":"王健礼","id":"0e057c08-b96d-4e53-b936-a4214f4b1b61","originalAuthorName":"王健礼"},{"authorName":"朱权","id":"b6ad6fa1-036a-456c-a255-c19592da0d92","originalAuthorName":"朱权"},{"authorName":"李象远","id":"aa53d31b-f349-471c-936e-c2f814e789b6","originalAuthorName":"李象远"},{"authorName":"龚茂初","id":"b6f4fd90-25c9-4c7c-bbb5-e107f44dd615","originalAuthorName":"龚茂初"},{"authorName":"陈耀强","id":"09ff9336-51ef-48c7-b063-b4959165e36e","originalAuthorName":"陈耀强"}],"doi":"10.1016/S1872-2067(12)60541-5","fpage":"1139","id":"0bdf99e5-ddbe-45e2-ae2f-22fadaf16b60","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":"efe9be19-2853-4557-b8fd-32a4f11ad5bc","keyword":"催化裂解","originalKeyword":"催化裂解"},{"id":"c8a1ae33-d18f-4707-a589-4f5b999f6c17","keyword":"积炭","originalKeyword":"积炭"},{"id":"00538b5a-ee77-4149-9d08-aa9fc8cc481d","keyword":"碱土金属氧化物","originalKeyword":"碱土金属氧化物"},{"id":"c069377b-0c47-4d39-88d0-50cd624741a6","keyword":"吸热燃料","originalKeyword":"吸热燃料"},{"id":"b5e01b5d-91dc-49f0-9a40-3c3579e4ee76","keyword":"整体式催化剂","originalKeyword":"整体式催化剂"}],"language":"zh","publisherId":"cuihuaxb201306011","title":"整体式担载型Pt基催化剂上航空煤油的裂解:助剂SrO和BaO的影响","volume":"34","year":"2013"},{"abstractinfo":"多相催化反应过程伴随着反应分子与催化剂表面之间的相互作用.这种相互作用强度与催化剂的反应性能密切相关.根据萨巴蒂尔原理(Sabatier principle),性能最优的催化剂与反应中间体之间应该具有适中的相互作用强度,一方面促进反应物活化,另一方面允许产物脱附.这样,测量和研究反应分子与催化剂之间的相互作用强度对于理解催化反应性能有非常重要的意义.当气体反应物接触到催化剂表面会伴随着热量的产生,该热量被定义为吸附热,并与吸附物种与催化剂之间形成的化学键强度直接相关.吸附热通常可以通过程序升温脱附(TPD)等方法间接获得.但是这些方法建立在吸附物种能够可逆地吸附和脱附的假设基础上.在实际的程序升温过程中,吸附物种通常会发生分解,并伴随着固体催化剂的重构等现象.因此,采用基于Tian-Calvet原理的热流量热计直接测量担载催化剂的吸附热是最可靠的吸附热测量方法.基于热流量热计测量的微量热技术的一个重要优点是采用合适的探针分子吸附,可以获得担载型催化剂表面吸附活性中心的数量、强度及其能量分布的定量信息.比如,采用碱性探针分子NH3或者吡啶,酸性探针分子CO2或SO2能够定量催化剂上酸-碱位的强度和数量,而金属催化剂活性中心可以应用H2或CO进行探测.当这些催化剂活性中心的定量表征结果与催化剂的反应活性测试结果相关联时,可以区分不同强度活性中心的反应性能,并为提高和改进催化剂性能提供研制方向.相对于NH3或CO等小分子气体,催化反应的反应物、产物或可能的中间体通常都是复杂分子,程序升温技术测量它们的吸附热时,这些分子通常会发生分解,限制了其吸附热的测量和研究.微量热技术能够直接测量这些分子的吸附热.因此,与催化反应活性相关联,反应物、产物或可能的中间体的吸附能量的测量和研究有利于更直接地认识催化剂的反应性能.在催化反应循环过程中,除了吸附,还包括表面反应和脱附步骤.这些步骤也伴随着吸附物种与催化剂之间键的形成与转换,并以热量的形式表现出来.测量这些热量对于认识催化反应过程,理解催化反应机理有重要的意义.热流量热计与催化微反系统相结合,为催化反应过程能量的测量和研究提供了可能.尽管微量热技术在测量担载型催化剂的吸附/反应能量并与反应性能相关联方面有其独特的优势,但是为了更好地用于催化研究,应该结合其它的表征技术(比如红外)确定吸附或反应物种的本质,结合理论计算对量热结果进行更好地补充和认识.本文综述了担载型催化剂的吸附/反应能量与反应性能关联的研究进展,指出了微量热技术在催化研究中的优势、不足,以及未来的研究方向.","authors":[{"authorName":"李林","id":"e7c2f0c8-8774-4301-8318-a8fdff63ac0d","originalAuthorName":"李林"},{"authorName":"林坚","id":"0dc9d271-4ffb-40be-9b84-a941bc77966e","originalAuthorName":"林坚"},{"authorName":"李筱玉","id":"4423b2e7-7673-4cf1-990f-7c26be61332a","originalAuthorName":"李筱玉"},{"authorName":"王爱琴","id":"bbf12b9e-fc8a-4228-a8fb-f63949d1910f","originalAuthorName":"王爱琴"},{"authorName":"王晓东","id":"8378394f-099b-459e-b76c-f391c1c830f4","originalAuthorName":"王晓东"},{"authorName":"张涛","id":"8f8d09bc-3887-4395-8932-b73fc55dfd8d","originalAuthorName":"张涛"}],"doi":"10.1016/S1872-2067(16)62578-0","fpage":"2039","id":"8079fbb1-53c9-48bc-b67e-3c16bf97caea","issue":"12","journal":{"abbrevTitle":"CHXB","coverImgSrc":"journal/img/cover/CHXB.jpg","id":"18","issnPpub":"0253-9837","publisherId":"CHXB","title":"催化学报 "},"keywords":[{"id":"32334ae8-ff92-47a0-9a5b-ea060cd23d0c","keyword":"催化","originalKeyword":"催化"},{"id":"38a6e16e-6f9b-431b-9d7f-82b2e2b9a458","keyword":"微量热","originalKeyword":"微量热"},{"id":"9617476f-cfc0-4c08-831e-e00cb78475dc","keyword":"反应性能","originalKeyword":"反应性能"},{"id":"4d9935b6-83de-465b-b57e-00968acfb06b","keyword":"能量","originalKeyword":"能量"},{"id":"70cce62e-79db-431d-8f99-c14731f58899","keyword":"键强","originalKeyword":"键强"},{"id":"bf0be1de-0fd8-48a9-905a-76bc2c0b2e81","keyword":"催化剂表征","originalKeyword":"催化剂表征"}],"language":"zh","publisherId":"cuihuaxb201612001","title":"微量热技术测量担载型催化剂的吸附/反应能量并与反应性能相关联:综述","volume":"37","year":"2016"},{"abstractinfo":"分别测定了纯煤样和浸渍煤样的小角X射线散射,基于GBC理论假设,采用相关函数法计算了原位担载于两种烟煤上FeSO4的粒径分布,考察了助剂Na2S和尿素的添加对其粒径分布的影响.计算结果与XRD表征结果相似.FeSO4在两种煤样上的最可几粒径为4nm左右,分布范围为0.5～8 nm.助剂对FeSO4粒径分布的影响较小,它们的添加主要是改变了催化剂前驱体的活性组成.","authors":[{"authorName":"张立安","id":"74773d9f-5701-4019-b4af-40a445bb7297","originalAuthorName":"张立安"},{"authorName":"郭劼蘅","id":"39e1acf8-4113-4350-84d3-8e43a3c44f67","originalAuthorName":"郭劼蘅"},{"authorName":"杨建丽","id":"1f8acac3-0ec8-4674-b327-bb93403e08b3","originalAuthorName":"杨建丽"},{"authorName":"刘振宇","id":"39be0995-944f-4c9c-ac85-c2601a10c5ac","originalAuthorName":"刘振宇"},{"authorName":"生文君","id":"2c93ea4b-7eea-4336-b9a6-d5a7e11883cd","originalAuthorName":"生文君"},{"authorName":"董宝中","id":"ea0413ed-5cdc-4f4c-a105-cb7e46afb6c6","originalAuthorName":"董宝中"}],"doi":"","fpage":"633","id":"b1ba8ab8-c64a-4e87-9dfc-05216c7b5454","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":"26931fc6-59bd-4478-985f-a0584b73c223","keyword":"硫酸亚铁","originalKeyword":"硫酸亚铁"},{"id":"f278629f-ce31-467b-bc6c-7529b2062020","keyword":"煤","originalKeyword":"煤"},{"id":"dee382fe-9e6c-4daf-9053-be21cb5cfa46","keyword":"直接液化","originalKeyword":"直接液化"},{"id":"853d8016-ea76-48ec-8c2b-c012742baaa6","keyword":"粒径分布","originalKeyword":"粒径分布"},{"id":"a315288e-1cfe-41a4-bf7a-8b3a9b19b9ff","keyword":"小角X射线散射","originalKeyword":"小角X射线散射"},{"id":"b28ddf96-5e04-4508-9763-cde34c091867","keyword":"相关函数","originalKeyword":"相关函数"}],"language":"zh","publisherId":"cuihuaxb199906013","title":"相关函数法计算原位担载型煤直接液化催化剂的粒径分布","volume":"20","year":"1999"},{"abstractinfo":"制备了0.5%Pd/C催化剂和含钯担载双金属催化剂3%Cu-0.5%Pd/C, 3%Mo-0.5%Pd/C, 3%Ni-0.5%Pd/C, 3%Co-0.5%Pd/C, 3%Mn-0.5%Pd/C, 用XRD法和XPS法进行了表征. 结果表明, 室温下, 以KBH4还原剂制备的含钯担载双金属催化剂, 在碘苯与丙烯酸的Heck偶合反应中, 催化活性高于Pd/C(0.5 h的转化率高, 完成反应所需时间少), 显示出添加贱金属的协同效应. 其中, 3%Mo-0.5%Pd/C显示出最高的催化活性, 在0.5 h时的转化率(67.4%)和收率(52.6%)比0.5%Pd/C分别高54.5%和42.2%, 完成反应的时间最短, 表明钼的协同效应最高.","authors":[{"authorName":"崔名全","id":"b51db763-3091-494e-9a71-b15190e9ca58","originalAuthorName":"崔名全"},{"authorName":"张昭","id":"1e4dc061-6d72-4523-acf0-a939836a5779","originalAuthorName":"张昭"},{"authorName":"黄学超","id":"d7337d06-db9d-47ec-8725-f55893e8b041","originalAuthorName":"黄学超"},{"authorName":"张明俊","id":"52e2bc0a-1d0b-468b-9129-4192de36e526","originalAuthorName":"张明俊"}],"doi":"10.3969/j.issn.0258-7076.2006.01.014","fpage":"60","id":"85202c3a-44ea-49bb-b815-72bd50a30740","issue":"1","journal":{"abbrevTitle":"XYJS","coverImgSrc":"journal/img/cover/XYJS.jpg","id":"67","issnPpub":"0258-7076","publisherId":"XYJS","title":"稀有金属"},"keywords":[{"id":"e26b5fba-a598-46c3-8ac5-2195583db97e","keyword":"双金属催化剂","originalKeyword":"双金属催化剂"},{"id":"c38e56cc-9292-4991-8b79-67cc245af172","keyword":"钼","originalKeyword":"钼"},{"id":"bc1c03ea-00db-473f-9d59-2b52e35a0f25","keyword":"Heck反应","originalKeyword":"Heck反应"},{"id":"9332f1f8-2f0e-4724-9ad3-21ce24e7689d","keyword":"协同效应","originalKeyword":"协同效应"}],"language":"zh","publisherId":"xyjs200601014","title":"担载双金属催化剂对Heck反应的作用","volume":"30","year":"2006"},{"abstractinfo":"采用程序升温还原研究了氧化铈气凝胶担载氧化铜催化剂的还原行为,并与其对一氧化碳氧化反应的催化活性进行了关联. 发现此类催化剂中存在两种类型的氧化铜,即体相氧化铜和分散于载体表面的氧化铜,且后者中的部分氧化铜还原后易被氧化. 随着此易被氧化的铜含量的增加,催化剂对一氧化碳氧化反应的催化活性升高,表明此种类型的铜为催化剂的活性组分.","authors":[{"authorName":"刘源","id":"4455d9c1-2e19-4398-9be3-a605fa9d5165","originalAuthorName":"刘源"},{"authorName":"孙海龙","id":"ed4a5319-34a5-48c4-b275-495ced055408","originalAuthorName":"孙海龙"},{"authorName":"刘全生","id":"03fd953f-20ff-468e-a4b4-7d704ce8fe09","originalAuthorName":"刘全生"},{"authorName":"金恒芳","id":"47f70d74-5438-43fb-b53f-aeaacfe7b144","originalAuthorName":"金恒芳"}],"doi":"","fpage":"523","id":"02f8e1d5-2419-4897-b891-a873a41b4d02","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":"0ef5c11d-7522-403e-941a-ad0de99f2335","keyword":"氧化铈","originalKeyword":"氧化铈"},{"id":"4aa88175-aef2-4eab-a9a2-84f2a8016a07","keyword":"气凝胶","originalKeyword":"气凝胶"},{"id":"a2f6d534-c950-489e-b108-4291b7024ad5","keyword":"氧化铜","originalKeyword":"氧化铜"},{"id":"1da57ec2-2559-4751-b5bf-e78bd3868797","keyword":"负载型催化剂","originalKeyword":"负载型催化剂"},{"id":"4fc2e713-4129-44ac-8737-3f0c36ed5feb","keyword":"程序升温还原","originalKeyword":"程序升温还原"},{"id":"ac52b1d2-d995-415e-9dd6-5d4818f40d30","keyword":"一氧化碳","originalKeyword":"一氧化碳"},{"id":"c02da5a3-b26b-49c5-8f38-6a0f5a0de85a","keyword":"氧化","originalKeyword":"氧化"}],"language":"zh","publisherId":"cuihuaxb200106006","title":"氧化铈气凝胶担载氧化铜催化剂的TPR研究","volume":"22","year":"2001"}],"totalpage":5021,"totalrecord":50207}