The title compound trans-4-[（5-（2,4-dichlorophenoxy）-3-methyl- 1-phenyl-1H-pyrazol-4-yl）methyleneamino]- 1,5-dimethyl-2-phenyl-1,2-dihydropyrazol-3-one 3 （C28H23Cl2N5O2, Mr = 532.41） has been synthesized and its...The title compound trans-4-[（5-（2,4-dichlorophenoxy）-3-methyl- 1-phenyl-1H-pyrazol-4-yl）methyleneamino]- 1,5-dimethyl-2-phenyl-1,2-dihydropyrazol-3-one 3 （C28H23Cl2N5O2, Mr = 532.41） has been synthesized and its crystal structure was determined by single-crystal X-ray diffraction analysis. It crystallizes in triclinic, space group P1- with a = 8.9438（4）, b = 11.6065（5）, c = 14.2215（6）A, α = 112.566（1）, β = 92.324（2）, γ = 102.91（1）°, V= 1315.65（10） A^3, Z = 2, Dc = 1.344 g/cm^3,μ（MoKa） = 0.282 mm^-1, λ = 0.71073 A, F（000） = 552, the final R = 0.0587 and wR = 0.1578 for 5071 observed reflections （I 〉 2σ（I））. X-ray analysis reveals that the product is a thermodynamically stable trans isomer. Intra- and intermolecular C（ 12）-H（12）…O（1） and C（28）-H（28）...O（1）# 1 hydrogen bonds were observed in the title compound.展开更多
A new method of synthesis of 2 methyl 1 benzyl benzimidazole starting from 2 methyl benzimdazole and benzyl bromide was reported with KF Al 2O 3 as catlyst and DMF as solution.The influence of some reaction condition ...A new method of synthesis of 2 methyl 1 benzyl benzimidazole starting from 2 methyl benzimdazole and benzyl bromide was reported with KF Al 2O 3 as catlyst and DMF as solution.The influence of some reaction condition on yield was also tested,and the optimum conditions were obtained,the molecular ratio of catlyst and 2 methyl benzimdazole and benzyl bromide 1∶1∶1 05,the reaction temperature 20-25,and the yield 70 8%.展开更多
1-Decene was oligomerized over the supported AlCl3/γ-Al2O3 catalyst in a fixed-bed reactor. The effects of temperature and LHSV on oligomerization of 1-decene were investigated and the synthetic PAO was characterized...1-Decene was oligomerized over the supported AlCl3/γ-Al2O3 catalyst in a fixed-bed reactor. The effects of temperature and LHSV on oligomerization of 1-decene were investigated and the synthetic PAO was characterized with GC technique. Furthermore, the life of immobilized catalyst was tested and the mechanism of catalyst deactivation was discussed. The results showed that with an increasing temperature, the PAO yield increased and the kinematic viscosity of oil decreased. The GC results indicated that the synthesized PAO was a mixture consisting of dimers, trimers, tetramers and pentamers. The results of chloride content measurements and BET tests showed that catalyst deactivation could be mainly attributed to the loss of active components.展开更多
为制备出绿色环保且耐蚀性能更好的镁合金阳极氧化膜,以无害、无污染的氢氧化钠、硅酸钠、碳酸钠和柠檬酸钠为电解液主要成分,以不同的电流密度(5~20 m A/cm^2)对Mg_(97)Y_2Zn_1-0.5Al合金进行阳极氧化,通过扫描电镜观察阳极氧化膜的表...为制备出绿色环保且耐蚀性能更好的镁合金阳极氧化膜,以无害、无污染的氢氧化钠、硅酸钠、碳酸钠和柠檬酸钠为电解液主要成分,以不同的电流密度(5~20 m A/cm^2)对Mg_(97)Y_2Zn_1-0.5Al合金进行阳极氧化,通过扫描电镜观察阳极氧化膜的表面形貌,利用动电位极化曲线和3.5%Na Cl水溶液浸泡试验检测膜层的耐腐蚀性能,研究了电流密度对膜层表面形貌与性能的影响。结果表明:恒流条件下不同电流密度时的阳极氧化过程均分为氧化膜快速生长、缓慢生长及生长相对平稳3个时期;随着电流密度的增加,氧化膜上的孔洞数目逐渐减少,孔径逐渐增大,膜层的耐蚀性能先增强后减弱;15 m A/cm^2电流密度下所得膜层的孔洞与裂纹较少,孔径较小,自腐蚀电流密度最小,腐蚀失重最小,耐蚀性最好。展开更多
基金the Science Research Foundation of Henan Institute of Science and Technology (No. 06036)
文摘The title compound trans-4-[（5-（2,4-dichlorophenoxy）-3-methyl- 1-phenyl-1H-pyrazol-4-yl）methyleneamino]- 1,5-dimethyl-2-phenyl-1,2-dihydropyrazol-3-one 3 （C28H23Cl2N5O2, Mr = 532.41） has been synthesized and its crystal structure was determined by single-crystal X-ray diffraction analysis. It crystallizes in triclinic, space group P1- with a = 8.9438（4）, b = 11.6065（5）, c = 14.2215（6）A, α = 112.566（1）, β = 92.324（2）, γ = 102.91（1）°, V= 1315.65（10） A^3, Z = 2, Dc = 1.344 g/cm^3,μ（MoKa） = 0.282 mm^-1, λ = 0.71073 A, F（000） = 552, the final R = 0.0587 and wR = 0.1578 for 5071 observed reflections （I 〉 2σ（I））. X-ray analysis reveals that the product is a thermodynamically stable trans isomer. Intra- and intermolecular C（ 12）-H（12）…O（1） and C（28）-H（28）...O（1）# 1 hydrogen bonds were observed in the title compound.
基金The Project was Supported by Nature Science Foundation of Minstry of Education of Shaanxi Province(09JK718)Scientific Research Foundation of Xi'an Institute of Post and Telecom(ZL2009-32)
文摘A new method of synthesis of 2 methyl 1 benzyl benzimidazole starting from 2 methyl benzimdazole and benzyl bromide was reported with KF Al 2O 3 as catlyst and DMF as solution.The influence of some reaction condition on yield was also tested,and the optimum conditions were obtained,the molecular ratio of catlyst and 2 methyl benzimdazole and benzyl bromide 1∶1∶1 05,the reaction temperature 20-25,and the yield 70 8%.
基金the SINOPEC Corporation for the financial support
文摘1-Decene was oligomerized over the supported AlCl3/γ-Al2O3 catalyst in a fixed-bed reactor. The effects of temperature and LHSV on oligomerization of 1-decene were investigated and the synthetic PAO was characterized with GC technique. Furthermore, the life of immobilized catalyst was tested and the mechanism of catalyst deactivation was discussed. The results showed that with an increasing temperature, the PAO yield increased and the kinematic viscosity of oil decreased. The GC results indicated that the synthesized PAO was a mixture consisting of dimers, trimers, tetramers and pentamers. The results of chloride content measurements and BET tests showed that catalyst deactivation could be mainly attributed to the loss of active components.
文摘为制备出绿色环保且耐蚀性能更好的镁合金阳极氧化膜,以无害、无污染的氢氧化钠、硅酸钠、碳酸钠和柠檬酸钠为电解液主要成分,以不同的电流密度(5~20 m A/cm^2)对Mg_(97)Y_2Zn_1-0.5Al合金进行阳极氧化,通过扫描电镜观察阳极氧化膜的表面形貌,利用动电位极化曲线和3.5%Na Cl水溶液浸泡试验检测膜层的耐腐蚀性能,研究了电流密度对膜层表面形貌与性能的影响。结果表明:恒流条件下不同电流密度时的阳极氧化过程均分为氧化膜快速生长、缓慢生长及生长相对平稳3个时期;随着电流密度的增加,氧化膜上的孔洞数目逐渐减少,孔径逐渐增大,膜层的耐蚀性能先增强后减弱;15 m A/cm^2电流密度下所得膜层的孔洞与裂纹较少,孔径较小,自腐蚀电流密度最小,腐蚀失重最小,耐蚀性最好。
