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3篇 您的检索式：作者名="Halimaton Hamdan"

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		题名	作者	年代	出处	被引量
	1	Sulphated AlMCM-41: Mesoporous solid Br?nsted acid catalyst for dibenzoylation of biphenyl显示文摘	Ng Eng Poh Hadi Nur Mohd Nazlan Mohd Muhid Halimaton Hamdan	2006	Catalysis Today2006，，2：	1
	2	Alkylsilylated Gold Loaded Magnesium Oxide Aerogel Catalyst in the Oxidation of Styrene显示文摘	Hadi Nur Izan Izwan Misnon Halimaton Hamdan	2009	Catalysis Letters (-)2009，，1：	1
	3	Negative effect of Ni on PtHY in n-pentane isomerization evidenced by IR and ESR studies显示文摘Ni/PtHY with different Ni loadings was prepared by impregnating HY with hexachloroplatinic acid solution and Ni2+/N,N-dimethylformamide solution. An increase in the Ni loading decreased the crystallinity, specific surface area and meso-micropores of the catalysts. Ni interacted with hydroxyl groups to produce IR absorption bands at 3740-3500 cm-1. Increasing Ni loadings resulted in a decrease in the intensities of the broad bands at 3730-3500 cm-1 and the sharp band at 3740 cm-1 with simultaneous development of new absorbance band at 3700 cm-1 that was attributed to (-OH)Ni. The acidity of the samples did not significantly change with Ni loadings up to 1.0 wt%, which indicated that Ni mostly interacts with non-acidic silanol groups (terminal- and structural-defect OH groups). The presence of Ni decreased the activity of PtHY toward the isomerization of n-pentane because of a decrease in the number of active protonic-acid sites that formed from molecular hydrogen. IR and ESR studies confirmed that Pt facilitated the formation of protonic-acid sites from molecular hydrogen, whereas Ni, even when combined with Pt, didn't exhibit such ability. The absence of protonic-acid sites from molecular hydrogen significantly decreased the yield of iso-pentane and markedly increased the cracking products.	Muhammad Arif Ab Aziz Nur Hidayatul Nazirah Kamarudin Herma Dina Setiabudi Halimaton Hamdan Aishah Abdul Jalil Sugeng Triwahyono	2012	Journal of Natural Gas Chemistry2012，21，1：	0

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