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成为:n(Al2O3)?n(P2O5)? n(TMAC)?n(TMAOH)? n(H2O)=1?1?3?2?70,最后将凝胶液于晶化釜中80 ℃晶化6 d.经过滤,蒸馏水洗涤后,在80 ℃恒温箱中干燥12 h,得到分子筛前驱体.前驱体焙烧时,先慢速升温至250 ℃焙烧1 h,再慢速升温至550 ℃焙烧5 h,制得介孔磷铝分子筛,记为MAP.为合成Co取代介孔磷铝分子筛以乙酸钴代替部分异丙醇铝,凝胶...对苯乙烯氧化反应的影响 Fig.6 Effect of reaction temperature on oxidation reaction of styrene (n(H2O2)/n(styrene)=3; m(Co-MAP)/m(styrene)=5%; V(acetonitrile)/V(styrene)=2; 3 h) 反应时间对苯乙烯氧化反应的影响如图7所示.由图7可看出......
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electron microscope and scanning electron microscope. Meanwhile, the catalytic performance of the SnO2 hollow spheres and rod bundles toward CO oxidation was studied. The result indicates that SnO2 hollow spheres with the uniform size exhibit a better catalytic activity toward CO oxidation, suggesting that the morphology of the materials has exerted a noticeable influence on the catalytic......
中的O-H键伸缩振动吸收峰位于3 500.81和3 380.02 cm-1处,的特征吸收峰位于1 548.20,1 348.26和836.15 cm-1处,没有出现Co3O4中Co-O键的吸收峰,表明水热处理后的前驱物为碱式碳酸钴.前驱物于450 ℃煅烧3 h的产物在660.81和562.47 cm-1处出现Co3O4中Co-O键的伸缩振动吸收峰,表明此时产物为Co3O4. 1－碱式碳酸钴前...碱式碳酸钴热分解制备四氧化三钴及其表征 杨幼平,刘人生,黄可龙,张平民 (中南大学 化学与化工学院,湖南 长沙,410083) 摘 要:以乙酸钴为钴源,碳酸铵为沉淀剂,聚乙二醇(相对分子质量约为20 000)为表面活性剂,在水-正丁醇溶剂体系中,经水热处理制得片状碱式碳酸钴前驱体；采用不同的热分解方式对碱式碳酸钴前驱体进行处理制备四氧化三钴,并用热重,红外光谱,X射线衍射和透射......
activity of the product for CO oxidation was carried out at the region of 30-300 °C in a U-shaped quartz reactor with feeding about 0.15 g of the catalyst, which was loaded on Al2O3 carrier. The inlet... showed higher CO oxidation activity, which indicated that the morphology of ceria products affected the catalytic performance. The ceria nanotubes supported on Al2O3 demonstrated that conversion......
:CuO/CeO2 catalysts were prepared by a coprecipitation method and tested for CO removal from reformed fuels via selective oxidation. The influence of the calcination temperature on the chemical compositions and catalytic performance of CuO/CeO2 catalysts were studied. It was found that CuO/CeO2 catalysts exhibit excellent CO oxidation activity and selectivity,and the complete removal of CO......
Cu-Co/ACN-VI,Cu-Co/ACN-DP,Cu-Co/ACN-SG和Cu-Co/ACN-HY；活性组分的负载导致催化剂微孔增多,有利于吸附Hg0；VI法和DP法制备的Cu-Co/ACN催化剂脱除CO性能较优,表面存在的钴氧化物主要为Co3O4；SG法和HY法制备Cu-Co/ACN催化剂脱除Hg0性能较优,表面存在更多的CuO；Co3O4和CuO可以提升活性焦催化剂同时脱Hg0和CO性能... and CuO can enhance the performance of activated coke catalyst for removal Hg0 and CO, and they are beneficial to the occurrence of catalytic oxidation reaction and are the main reactive active site......
Preferential Oxidation of CO in H2 over CuO/CeO2 Catalysts Wang Xiaoyan1,Liu Yuan2,Bai Xue1 (1.School of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010062, China... method for preferential oxidation of CO in H2. The CO conversion is close to 100% and selectivity to CO oxidation is 96% over this catalyst at a low reaction temperature of 95 ℃ and a space velocity......
Oxidation kinetics and interfacial bonding properties of Ni-Co based superalloys SONG Zhengqi1, LI Zhiqiang2, ZHENG Xudong2, SHEN Mingming2, ZOU Jianpeng1 (1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China； 2. R&D Center, China Tobacco Yunnan Industrial Co. Ltd., Kunming 650231, China) Abstract: The oxidation behavior and oxidation kinetics of Ni-Co based......
