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71篇 您的检索式:作者名="Aishah"
    题名 作者 年代 出处 被引量
1Study of Hydrogen Adsorption on Pt/WO_3-ZrO_2 through Pt Sites显示文摘决定步和在 Pt/WO3- ZrO2 上涉及氢吸附的精力障碍的率基于氢吸附仅仅通过磅地点发生的假设被学习。Pt/WO3-ZrO2 上的氢吸附的率在 323 573 K 的吸附温度范围和 50 Torr 的一个起始的氢压力被测量。氢举起的率为分钟和吸附在 523 K 下面为超过 5 h 继续的起始的很少很高。氢举起远为所有吸附温度超过了统一的 H/Pt 比率,显示氢的吸附包含了形成氢原子的磅地点上的氢的分离吸附,氢原子的溢出到 WO3-ZrO2 催化剂的表面上,散开在 WO3-ZrO2 催化剂的表面上在氢原子上掉下,并且职业人员补品酸地点的形成由释放电子可以与第二个氢原子在反应在吊楔酸地点附近形成氢化物的一个电子从氢原子发源。决定步的率是有 12.3 kJ/mol 的激活精力的溢出。氢吸附的率不能被率方程基于决定步的率是表面散开的假设表示。Pt/WO3-ZrO2 的活动在在的 n-heptane 异构化上被检验氢的增加在 n-heptane 的变换上积极效果、在向 iso-heptane 的选择上否定效果的提供的部分压力。Sugeng Triwahyono Aishah Abdul Jalil Hideshi Hattori 2007Journal of Natural Gas Chemistry2007,16,3:8
2Characterization and Activity of Cr, Cu and Ga Modified ZSM-5 for Direct Conversion of Methane to Liquid Hydrocarbons显示文摘Direct conversion of methane using a metal-loaded ZSM-5 zeolite prepared via acidic ion exchange was investigated to elucidate the roles of metal and acidity in the formation of liquid hydrocarbons. ZSM-5 (SiO2/Al2O3=30) was loaded with different metals (Cr, Cu and Ga) according to the acidic ion-exchange method to produce metal-loaded ZSM-5 zeolite catalysts. XRD, NMR, FT-IR and N2 adsorption analyses indicated that Cr and Ga species managed to occupy the aluminum positions in the ZSM-5 framework. In addition, Cr species were deposited in the pores of the structure. However, Cu oxides were deposited on the surface and in the mesopores of the ZSM-5 zeolite. An acidity study using TPD-NH3, FT-IR, and IR-pyridine analyses revealed that the total number of acid sites and the strengths of the Bronsted and Lewis acid sites were significantly different after the acidic ion exchange treatment.Cu loaded HZSM-5 is a potential catalyst for direct conversion of methane to liquid hydrocarbons. The successful production of gasoline via the direct conversion of methane depends on the amount of aluminum in the zeolite framework and the strength of the Bronsted acid sites.Nor Aishah Saidina Amin Didi Dwi Anggoro 2003Journal of Natural Gas Chemistry2003,12,2:6
3Screening of MgO- and CeO_2-Based Catalysts for Carbon Dioxide Oxidative Coupling of Methane to C_(2+) Hydrocarbons显示文摘The catalyst screening tests for carbon dioxide oxidative coupling of methane (CO2-OCM)have been investigated over ternary and binary metal oxide catalysts.The catalysts are prepared by doping MgO-and CeO2-based solids with oxides from alkali(Li2O),alkaline earth (CaO),and transition metal groups (WO3 or MnO).The presence of the peroxide (O2^2-)active sites on the Li2O2,revealed by Raman spectroscopy,may be the key factor in the enhanced performance of some of the Li2O/MgO catalysts.The high reducibility of the CeO2 catalyst,an important factor in the CO2-OCM catalyst activity,may be enhanced by the presence of manganese oxide species. The manganese oxide species increases oxygen mobitity and oxygen vacancies in the CeO2 catalyst.raman and Fourier Transform Infra Red (FT-IR)spectroscopies revealed the presence of lattice vibrations of metal-oxygen bondings and active sites in which the peaks carresponding to the buld crystalline structures of Li2O,CaO,WO2 and MnO are detected.The performance of 5%MnO/15%CaO/CeO2 catalyst is the most potential among the CeO2-based catalysts,although lower than the 2%Li2O/MgO catalyst.The 2%Li2O/MgO catalyst showed the most promising C2+hydrocarbons selectivity and yield at 98.0%and 5.7%,respectively.Istadi Nor Aishah Saidina Amin 2004Journal of Natural Gas Chemistry2004,13,1:5
4容碳的SiW_(20)-Al/Zr_(10)催化剂用于甘油脱水制丙烯醛(英文)显示文摘将一系列负载型硅钨酸催化剂用于甘油脱水制丙烯醛反应中.表征结果表明,最终所得催化剂具有高的热稳定性、大的孔径、强的L酸位和大的比表面积.X射线光电子能谱中清晰地出现归属于W(W 4f=35.8 eV),Al(Al 2p=74.9 eV)和Zr(Zr 3d=182.8 eV)元素的谱峰.在SiW_(20)-Al/Zr_(10)催化剂上丙烯醛选择性最高,为87.3%,此时甘油转化率为97%.由于高浓度L酸位的存在,显著降低了催化剂表面积碳量,因而该催化剂即使反应40 h之后仍具有较高地催化生成丙烯醛的活性和选择性.响应面方法表明,在以下优化条件下反应甘油转化率和丙烯醛选择性分别达87.7%和97.0%:催化剂用量0.5wt%,进料甘油浓度10 wt%,反应温度300 ℃.传质限制评估结果显示,当颗粒尺寸d_P<20μm时,反应不存在内外扩散限制.综上可见。Amin Talebian-Kiakalaieh Nor Aishah Saidina Amin 2017Chinese Journal of Catalysis2017,38,10:4
5Synthesis, Characterization and X-ray Structure of N-(4-bromobutanoyl-N'-(2-3-and 4-methylphenyl)thiourea显示文摘N-4-(bromobutanoyl)-N'-(o-, m- and p-tolyl)thioureas 3a, 3b and 3c respectively, were synthesized by the reaction of 4-bromobutanoylisothiocyanate with p-, m- and o-toludine. The products were characterized by IR, and NMR spectroscopic techniques. The two carbonoylthiourea isomers N-(4-bromobutanoyl)-N'-(3-methylphenyl)thiourea(3b) and N-(4-bromobutanoyl)-N'-(4-methylphenyl)thiourea(3c) were obtained in crystalline form by recrystallization from DMSO. Xray crystallographic studies showed that both compounds 3b and 3c crystallize in triclinic system with space group of P1. The molecules adopt trans-cis configuration with respect to the positions of 4-bromobutanoyl and tolyl groups respectively, against the thiono C=S bond across their C–N bonds. The configuration is attributed by the intrahydrogen bond between the carbonyl oxygen and amide hydrogen atoms. Both crystal structures are stabilized by N–H···S intermolecular hydrogen bonds to form dimers and arranged along the b axis.Hamza M Abosadiya Siti Aishah Hasbullah Bohari M Yamin 2015Chinese Journal of Structural Chemistry2015,34,3:3
6Ethylene Conversion to Higher Hydrocarbon over Copper Loaded BZSM-5 in the Presence of Oxygen显示文摘从甲烷的高级烃的成功的生产取决于稳定性或中间体的氧化速度。BZSM-5 和修改 BZSM-5 催化剂的表演为乙烯变换被测试进高级烃。催化实验在一张改正床被执行在气压的微反应堆。催化剂为他们的结构和酸味用 XRD, NH3-TPD,和红外被描绘。结果建议 BZSM-5 是弱酸。进 BZSM-5 的铜的介绍改进了 BZSM-5 的酸味。向高级烃的乙烯的变换依赖于催化剂的酸味。仅仅更弱的酸中心被要求把乙烯变换成高级烃。在 BZSM-5 上装载 Cu 特别在低百分比为高级烃改进了选择。乙烯的反应依赖于酸味的数量以及催化剂表面上的金属的存在。Cu1%BZSM-5 能够把乙烯变换成高级烃。在金属和酸性部位之间的平衡影响乙烯变换和高级烃选择的表演。Cu 的更高的装载导致艇长的形成。给词调音:乙烯变换;BZSM-5 沸石;酸味;Ramli Mat Nor Aishah Saidina Amin Zainab Ramli W.Azelee W.Abu Bakar 2006Journal of Natural Gas Chemistry2006,15,4:2
7Methane to Liquid Hydrocarbons over Tungsten-ZSM-5 and Tungsten Loaded Cu/ZSM-5 Catalysts显示文摘金属包含 ZSM-5 能在甲烷氧化生产高级烃。许多研究人员学习了 HZSM-5 的适用性并且为甲烷变换修改 ZSM-5 到结果仍然导致的液烃,而是他们的研究低变换,低选择和低耐热性。由与钨(W) 装载,修改 HZSM-5 能提高它的热抵抗性能,和高反应温度(800 ??6 号元素碳的化学符号) 没由升华导致 W 部件的损失。与钨和铜(Cu ) 装载 HZSM-5 象 CO2 和 C5+ 选择一样在甲烷变换导致了增长。相反,公司, C2 ¨ C 3 并且 H2O 选择被减少。把甲烷变换成液烃(C5+) 的过程依赖于金属表面积和沸石的酸味。高甲烷变换和 C5+ 选择,和低 H2O 选择在 W/3.0Cu/HZSM 上被获得。给词调音:甲烷;液烃;HZSM-5;W-ZSM-5;Didi Dwi Anggoro Nor Aishah Saidina Amin 2006Journal of Natural Gas Chemistry2006,15,4:2
8Gelling of microbial transglutaminase cross-linked soy protein in the presence of ribose and sucrose显示文摘Chee-Yuen Gan Aishah A. Latiff Lai-Hoong Cheng Azhar Mat Easa 2009Food Research International2009,,10:2
9A review on novel processes of biodiesel production from waste cooking oil 显示文摘Amin Talebian-Kiakalaieh Nor Aishah Saidina Amin Hossein Mazaheri 2013Applied Energy2013,104,:1
10Eye on teaching: improving practice through research inquiries显示文摘Raja Maznah Raja Hussain Aishah Abu Bakar 2011Procedia - Social and Behavioral Sciences2011,,:1
11Adsorptive behavior of surfactants on surface of Portland cement 显示文摘YIN S AISHAH F SALMIAH A 2001Cem Concr Res2001,31,7:1
12A review on novel processes of biodiesel production from waste cooking oil 显示文摘Atmin Talebian-Kiakalaieh Nor Aishah Saidina Amin Hossein Mazaheri 2013Applied Energy2013,104,:1
13Constituents of the essential oil of Baeckea frutescens L from malaysia显示文摘Ibrahim Jantan Abu Said Ahmad Siti Aishah Abu Bakar 1998Flavour and Fragrance Journal1998,13,4:1
14Identification of different subtypes of breast cancer using tissue microarray显示文摘Munirah MA Siti - Aishah MA Reena MZ 2011Rom J Morphol Embryol2011,52,2:1
15Optimization of alcohol insoluble polysaccharides (AIPS) extraction from the Parkia speciosa pod using response surface methodology (RSM)显示文摘Chee-Yuen Gan Normaliza Hj. Abdul Manaf Aishah A. Latiff 2009Carbohydrate Polymers2009,,4:1
16Anthocyanins from Hibisscus Sabdariffa,Melastoma malabathricum and Ipomoea batatas and its color properties显示文摘Aishah B Nursabrina M Noriham A Norizzah AR Mohamad S H 2013International Food Research Journal2013,20,2:1
17Serum levels of squamous cell carcinoma antigen and CA 125 in cervical intraepithelial neoplasia and invasive squamous cell carci- noma of the uterine cervix 显示文摘Looi M D Hatta M A Siti Aishah 2011International Journal of Cancer Research2011,2,3:1
18Biodiesel fuel production from algae as renewable energy显示文摘Hossain abms Aishah S Boyce AN 2008American Journal of Biochemistry and Bioteehonology2008,4,3:1
19Thermodynamic equilibrium analysis of combined carbon dioxide reforming with partial oxidation of methane to syngas显示文摘Nor Aishah Saidina Amin Tung Chun Yaw 2007International Journal of Hydrogen Energy2007,,12:1
20Potential Roles of Stevia rebaudiana Bertoni in Abrogating Insulin Resistance and Diabetes: A Review显示文摘Nabilatul Hani Mohd-Radzman W. I. W. Ismail Zainah Adam Siti Safura Jaapar Aishah Adam Bechan Sharma 2013Evidence-Based Complementary and Alternative Medicine2013,,:1
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