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Article
Enhancement of Pt−Sn/Al2O3 catalyst stability for butane dehydrogenation by modification with Sm and Li
Stabilization methods of Pt−Sn/Al2O3 dehydrogenation catalysts by modification with Sm and Li are introduced. Pt crystallite dispersion on the support can be promoted by Sm. Li, especially when corporated with Sm...
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Article
New method for olefin production from light alkanes
A new method is presented for olefin production by oxidative dehydrogenation-cracking of light alkanes. ZSM-5 zeolites modified by Co, Mo, K, Ca, Mg, etc., were used as catalysts. The selectivity of olefins in...
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Article
Standard Gibbs energies of transfer of potassium tetraphenylborate from water to straight-chain n-alkanols
Solubilities of potassium tetraphenylborate in water, methanol, ethanol, 1-propanol, 1-butanol, 1-pentanol, 1-hexanol, and 1-octanol at 15, 25, 35, 45, 55°C have been determined by spectrophotometry. The stand...
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Article
Regeneration behaviors of Fe/Si‐2 and Fe–Mn/Si‐2 catalysts for C2H6 dehydrogenation with CO2 to C2H4
The catalytic performance of Fe/Si‐2 and Fe–Mn/Si‐2 catalysts for conversion of C2H6 with CO2 to C2H4 was examined in a continuous‐flow and fixed‐bed reactor. The results show that the Fe–Mn/Si‐2 catalyst exhibit...
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Article
The Catalytic Dehydrogenation of c2h6 to c2h4 under non-Oxidative Conditions over the 6cr/g-al2o3Catalyst
In the present paper, the catalytic dehydrogenation of C2H6 to C2H4 under non-oxidative conditions was investigated in a fixed-bed micro-reactor under ambient pressure at 823 - 923 K. The 6Cr/g-Al2O3 catalyst was...
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Article
Well-Dispersed Gallium-Promoted Sulfated Zirconia on Mesoporous MCM-41 Silica
Gallium-promoted sulfated zirconia (SZ) was confined inside pure-silica MCM-41 (abbreviated as SZGa/MCM-41), where the latter served as a host material. It was prepared by direct dispersion of metal sulfate in...
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Article
Mesostructured Sulfated Zirconia with High Catalytic Activity in n-Butane Isomerization
A mesostructured sulfated zirconia with a large surface area (189 m2/g) has been successfully prepared using a triblock copolymer as a structure-directing agent. The resulting material was characterized by XRD, T...
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Article
Synthesis, Characterization and Catalytic Oxidation of Carbon Monoxide over Cobalt Oxide
A mix-valenced cobalt oxide, CoOx, was prepared from cobalt nitrate aqueous solution through a precipitation with sodium hydroxide and an oxidation by hydrogen peroxide. Further, other pure cobalt oxide species w...
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Article
Creating Mesopores in ZSM-5 Zeolite by Alkali Treatment: A New Way to Enhance the Catalytic Performance of Methane Dehydroaromatization on Mo/HZSM-5 Catalysts
Well-controlled treatment with alkali solution causes the etching of HZSM-5 framework, which results in the formation of the new porosity and channel structure with the coexistence of micropores and mesopores,...
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Article
Synthesis, properties, and application of novel silane-modified polyoxyethylene ether surfactants
Novel silane-modified polyoxyethylene ether surfactants (SMPES) were synthesized to improve the properties of water-based silicone rubber by reacting polyoxyethylene ether, RO(CH2CH2O)nH (where R=nonylphenyl or d...
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Article
Comparison of the promoting effects of gallium and aluminium on the n-butane isomerization actvity of sulfated zirconia
Sulfated zirconia catalysts promoted by gallium or aluminium were prepared and tested for n-butane isomerization. Both elements increase and stabilize the isomerization rate. Characterization results showed that ...
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Article
Isopiestic Study of Water + Mannitol(sat) + Sodium Chloride + Ammonium Chloride + Barium Chloride at T = 298.15 K and Comparison with the Ideal-Like Solution Model
Isopiestic measurements have been carried out at the temperature 298.15 K for the quinary system (water + mannitol(sat) + sodium chloride + ammonium chloride + barium chloride) saturated with mannitol and its ...
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Article
A Microcalorimetric Study of Host–Guest Complexes of α-Cyclodextrin with Alkyl Trimethyl Ammonium Bromides in Aqueous Solutions
Interactions between α-CD and three alkyl trimethyl ammonium bromides, a homologues series of surfactants, in aqueous solutions have been investigated with titration microcalorimetry at 298.15 K. The results a...
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Article
Preparation and characterization of nanosized nickel oxide
Nanosized nickel oxide was synthesized by a simple liquid-phase process to obtain the hydroxide precursor and then calcined to form the oxide. The precursor and the nickel oxide were characterized by X-ray dif...
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Article
Development and Application of Oxygen Permeable Membrane in Selective Oxidation of Light Alkanes
In this paper, oxygen permeable membrane used in membrane reactor for selective oxidation of alkanes will be discussed in detail. The recent developments for the membrane materials will be presented, and the s...
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Article
The catalytic oxidation of phenol with H2O2 by metalloporphyrins as peroxidase mimics
Three metalloporphyrin complexes are used as peroxidase mimics in the oxidation of phenol by hydrogen peroxide.A kinetic model for the titled reaction is constructed.
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Article
A highly efficient Cu/ZnO/Al2O3 catalyst via gel-coprecipitation of oxalate precursors for low-temperature steam reforming of methanol
The impact of preparation methods on the structure and catalytic behavior of Cu/ZnO/Al2O3 catalysts for H2 production from steam reforming of methanol (SRM) has been reported. The results show that the nanostruct...
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Article
Hydroisomerization of Long-Chain Alkane Over Pt/SAPO-11 Catalysts Synthesized from Nonaqueous Media
SAPO-11 molecular sieves were synthesized from nonaqueous media. The effects of Si and Al sources as well as solvents on the catalytic performance of SAPO-11 were investigated by the hydroisomerization reactio...
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Article
Chromium Supported on Mesocellular Silica Foam (MCF) for Oxidative Dehydrogenation of Propane
A series of chromium-containing mesocellular silica foam (MCF) catalysts have been prepared and characterized in the oxidative dehydrogenation (ODH) of propane between 350 and 600 °C. It is demonstrated that t...
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Article
Effect of Vanadium Promotion on Activated Carbon-Supported Cobalt Catalysts in Fischer–Tropsch Synthesis
The effect of vanadium promotion on activated carbon (AC)-supported cobalt catalysts in Fischer–Tropsch synthesis has been studied by means of XRD, TPR, CO-TPD, H2-TPSR of chemisorbed CO and F-T reaction. It was ...