Search Results - "Lim, Sangyun"

Methanation of carbon dioxide on Ni-incorporated MCM-41 catalysts: The influence of catalyst pretreatment and study of steady-state reaction by Du, Guoan, Lim, Sangyun, Yang, Yanhui, Wang, Chuan, Pfefferle, Lisa, Haller, Gary L.

“…The methanation of carbon dioxide was carried out over Ni-incorporated MCM-41 catalysts. The Ni-MCM-41 catalysts containing 1–3 wt% Ni were prepared by…”
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Synthesis, Characterization, and Catalytic Performance of Highly Dispersed Co-SBA-15 by Wang, Chuan, Lim, Sangyun, Du, Guoan, Loebicki, Codruta Zoican, Li, Nan, Derrouiche, Salim, Haller, Gary L

“…Highly dispersed cobalt on SBA-15 was successfully prepared by a post synthesis grafting of cobalt. Of the cobalt precursors tested, Co(II) acetylacetonate was…”
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Uniform-Diameter Single-Walled Carbon Nanotubes Catalytically Grown in Cobalt-Incorporated MCM-41 by Ciuparu, Dragos, Chen, Yuan, Lim, Sangyun, Haller, Gary L, Pfefferle, Lisa

“…Single-walled carbon nanotubes of uniform diameter were grown in cobalt-substituted MCM-41 molecular sieves templated with C12 and C16 alkyl chains to result…”
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Synthesis and Characterization of Highly Ordered Co−MCM-41 for Production of Aligned Single Walled Carbon Nanotubes (SWNT) by Lim, Sangyun, Ciuparu, Dragos, Pak, Chanho, Dobek, Frank, Chen, Yuan, Harding, David, Pfefferle, Lisa, Haller, Gary

“…Highly ordered cobalt substituted MCM-41 samples were synthesized and characterized for application as catalytic templates for producing aligned single walled…”
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Catalytic performance of vanadium incorporated MCM-41 catalysts for the partial oxidation of methane to formaldehyde by Du, Guoan, Lim, Sangyun, Yang, Yanhui, Wang, Chuan, Pfefferle, Lisa, Haller, Gary L.

“…The catalytic performance of incorporated V-MCM-41 catalysts for the partial direct oxidation of methane to formaldehyde with molecular oxygen has been…”
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Evidence for anchoring and partial occlusion of metallic clusters on the pore walls of MCM-41 and effect on the stability of the metallic clusters by Lim, Sangyun, Wang, Chuan, Yang, Yanhui, Ciuparu, Dragos, Pfefferle, Lisa, Haller, Gary L.

“…In order to explain the high stability of the Co- and Ni-MCM-41 catalysts, the hypotheses of anchoring of small metallic clusters to cations in and partial…”
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Synthesis and Characterization of Highly Ordered Ni-MCM-41 Mesoporous Molecular Sieves by Yang, Yanhui, Lim, Sangyun, Du, Guoan, Chen, Yuan, Ciuparu, Dragos, Haller, Gary L

“…Highly ordered Ni-MCM-41 samples with nearly atomically dispersed nickel ions were prepared reproducibly and characterized. Similar to the Co-MCM-41 samples,…”
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Low-Defect, Purified, Narrowly (n,m)-Dispersed Single-Walled Carbon Nanotubes Grown from Cobalt-Incorporated MCM-41 by Chen, Yuan, Wei, Li, Wang, Bo, Lim, Sangyun, Ciuparu, Dragos, Zheng, Ming, Chen, Jia, Zoican, Codruta, Yang, Yanhui, Haller, Gary L, Pfefferle, Lisa D

“…A mild, four-step purification procedure using NaOH reflux, HCl wash, and oxidation by 4 mol % molecular oxygen at 500 °C was developed to purify single-walled…”
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Synthesis of uniform diameter single-wall carbon nanotubes in Co-MCM-41: effects of the catalyst prereduction and nanotube growth temperatures by Chen, Yuan, Ciuparu, Dragos, Lim, Sangyun, Yang, Yanhui, Haller, Gary L, Pfefferle, Lisa

“…Catalyst pretreatment and CO disproportionation reaction conditions were observed to strongly affect the diameter uniformity of single-wall carbon nanotubes…”
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Synthesis, Characterization, and Stability of Fe−MCM-41 for Production of Carbon Nanotubes by Acetylene Pyrolysis by Amama, Placidus B, Lim, Sangyun, Ciuparu, Dragos, Yang, Yanhui, Pfefferle, Lisa, Haller, Gary L

“…Fe-substituted MCM-41 molecular sieves with ca. 1, 2, and 3 wt % Fe were synthesized hydrothermally using different sources of colloidal silica (HiSil and…”
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Multivariate correlation and prediction of the synthesis of vanadium substituted mesoporous molecular sieves by Yang, Yanhui, Lim, Sangyun, Wang, Chuan, Harding, David, Haller, Gary

“…Vanadium substituted mesoporous molecular sieves (V-MCM-41) were prepared following a synthesis procedure developed in our laboratory [J. Phys. Chem. B 106…”
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Synthesis and characterization of Pt/MCM-41 catalysts by Yao, Naisheng, Pinckney, Carla, Lim, Sangyun, Pak, Chanho, Haller, Gary L

“…The preparation of Pt/MCM-41 catalysts was studied. Three different precursors were used: platinum acetyl acetonate Pt(AcAc)2, tetraamine platinum (II) nitrate…”
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Statistical design of C10-Co-MCM-41 catalytic template for synthesizing smaller-diameter single-wall carbon nanotubes by Yang, Yanhui, York, John D., Xu, Jingqian, Lim, Sangyun, Chen, Yuan, Haller, Gary L.

“…As the SWNT diameter decreases, the diversity of possible chiral conformations decreases, therefore smaller-diameter SWNT with a narrow diameter distribution…”
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Statistical analysis of synthesis of Co-MCM-41 catalysts for production of aligned single walled carbon nanotubes (SWNT) by Yang, Yanhui, Lim, Sangyun, Wang, Chuan, Du, Guoan, Haller, Gary L.

“…The need for a multivariable designed experimental approach to the synthesis of Co-MCM-41 is described. The designed experiment was implemented with a total of…”
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Synthesis, characterization, and catalytic performance of highly dispersed vanadium grafted SBA-15 catalyst by Du, Guoan, Lim, Sangyun, Pinault, Mathieu, Wang, Chuan, Fang, Fang, Pfefferle, Lisa, Haller, Gary L.

“…Vanadium oxide grafted on mesoporous silica SBA-15 has been synthesized using a controlled grafting process. Its structure has been thoroughly investigated…”
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The effect of the cobalt loading on the growth of single wall carbon nanotubes by CO disproportionation on Co-MCM-41 catalysts by Chen, Yuan, Ciuparu, Dragos, Lim, Sangyun, Haller, Gary L., Pfefferle, Lisa D.

“…Highly ordered MCM-41 mesoporous molecular sieves in which silicon was isomorphously substituted with 0.5–4 wt.% cobalt were synthesized using an alkyl…”
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Preparation of Highly Ordered Vanadium-Substituted MCM-41:  Stability and Acidic Properties by Lim, Sangyun, Haller, Gary L

“…Vanadium-substituted mesoporous molecular sieves (MCM-41) were prepared and the effects of water concentration, anti-foaming agent addition, pH adjustment, and…”
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Improved synthesis of highly ordered Co-MCM-41 by Lim, Sangyun, Ciuparu, Dragos, Yang, Yanhui, Du, Guoan, Pfefferle, Lisa D., Haller, Gary L.

“…Transition metal incorporated MCM-41 materials were synthesized by careful control of multiple factors affecting the final product quality. Among them, the pH…”
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Synthesis of uniform diameter single wall carbon nanotubes in Co-MCM-41: effects of CO pressure and reaction time by Chen, Yuan, Ciuparu, Dragos, Lim, Sangyun, Yang, Yanhui, Haller, Gary L, Pfefferle, Lisa

“…The influence of the CO pressure and of the duration of catalyst exposure to CO was systematically investigated with respect to the carbon yield, selectivity,…”
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Statistical design and modeling of the process of methane partial oxidation using V-MCM-41 catalysts and the prediction of the formaldehyde production by Du, Guoan, Yang, Yanhui, Qiu, Wei, Lim, Sangyun, Pfefferle, Lisa, Haller, Gary L.

“…As a simplified approach to optimize the production of formaldehyde from partial oxidation of methane, this paper illustrates the application of statistical…”
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