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Article
Open AccessMorphometric analysis in mouse scleral fibroblasts using focused ion beam/scanning electron microscopy
The sclera as well as the cornea forms the principal part of the outer fibrous coat of the eye, with a primary function of protecting the intraocular contents and maintaining the shape of the globe. However, t...
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Article
Heterogeneous carbonylation of dimethyl ether to methyl acetate over bifunctional catalysts containing Rh and heteropoly acids
The carbonylation of dimethyl ether to methyl acetate was carried out in a high-pressure flowed fix-bed reaction system over heterogeneous halide-free catalysts. The TG curves indicated that solid 12-tungstosi...
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Article
Effects of Li and Al2O3 support on the improvement of light hydrocarbons selectivity in Ru-based Fischer–Tropsch reaction
The catalytic activities directing for an improvement of light olefin (C2′–C4′) selectivity were investigated on the RuMnLi/Al2O3 Fischer–Tropsch synthesis catalysts in a low pressure fixed-bed reactor. The C2′–C...
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Article
Synthesis of mixed alcohols from synthesis gas over alkali and Fischer–Tropsch metals modified MoS2/Al2O3-montmorillonite catalysts
A series of modified MoS2-supported catalysts was investigated for the synthesis of mixed alcohols from synthesis gas in a high-pressure gas–solid flow reaction system. Al2O3-pillared montmorillonite (denoted as ...
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Article
Selective hydrocarbon production by the hydrocracking of glucose
Re-modified Pt/SiO2–Al2O3 catalysts, which were active for the direct hydrotreating of jatropha oil into C18 hydrocarbons, were found to be effective for glucose transformation into C6 alkanes. At 350 °C and gluc...
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Article
Effect of secondary additives (Li, Mn) in Fe-promoted Rh/TiO2 catalysts for the synthesis of ethanol from syngas
Li and Mn have been used as secondary additives in Rh–Fe/TiO2 (Rh catalyst, TiO2 support, and Fe promoter) for the synthesis of ethanol from syngas. Introducing Li or Mn in Rh–Fe/TiO2 slightly decreased the catal...
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Article
Metal modification effects on ethanol conversion to propylene by H-ZSM-5 with Si/Al2 ratio of 150
Metal modification effects on ethanol conversion to propylene were examined by use of H-ZSM-5 with Si/Al2 ratio of 150. In La- and Mg-co-modified H-ZSM-5 (La/Al2 ratio: 1.0, Mg/Al2 ratio: 0.10), 32% propylene sel...
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Article
Hydrocracking of Biomass-Derived Materials into Alkanes in the Presence of Platinum-Based Catalyst and Hydrogen
Renewable green C2–C9 alkanes can be directly produced by Pt/H-ZSM-5-catalyzed hydrocracking of biomass-derived materials, no pre-treated or pre-treated by alcohol. The pre-treatment of cellulose in 1-hexanol ...
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Article
Catalytic conversion of ethanol to propylene by H-ZSM-11
A catalytic conversion of ethanol to propylene was carried out using H-ZSM-11. The highest propylene selectivity was obtained at Si/Al2 ratio of 120 and the value was 25% at 0.1 MPa, 550 °C. In W-modified H-ZSM-1...
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Article
Conversion of Ethanol to Propylene by H-ZSM-5 with Si/Al2 Ratio of 280
A catalytic conversion of ethanol to propylene was carried out by use of H-ZSM-5 with Si/Al2 ratio of 280. In H-ZSM-5 modified at a molar ratio of La to Al2 of 2.2, the propylene selectivity was 31% at 0.1 MPa, 5...
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Article
Effect of Fe-loading and reaction temperature on the production of olefins from ethanol by Fe/H-ZSM-5 zeolite catalysts
Lower loading of Fe (1 wt%) and higher reaction temperature (450 °C) led to higher and stable selectivity of C3+ olefins by ethanol conversion using Fe/H-ZSM-5 catalysts. Carbon deposition and framework collapse ...
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Article
Selective Hydrocracking of Fischer–Tropsch Waxes to High-quality Diesel Fuel Over Pt-promoted Polyoxocation-pillared Montmorillonites
Polyoxocation ([AlO4Al12(OH)24(H2O)12]7+ and [Zr4(OH)14(H2O)10]2+)-pillared montmorillonites were prepared by ion exchange, and they were used as solid acid catalysts, in comparison to some other solid acids, for...
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Article
Fischer–Tropsch Synthesis over Ru Catalysts by Using Syngas Derived from Woody Biomass
Synthesis gas of H2/CO = 2/1 was obtained from Japanese cedar chips at a gasification efficiency of 93%, by using steam as a gasification agent at a gasification temperature (T g) of 1,173...
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Article
Zr- and Li-Modified Ru/Sio2 Catalysts for Fischer–Tropsch Synthesis
We have found that Zr- and Li-modified Ru/SiO2 catalysts (Q-15) are extremely stable and can be used in FT synthesis to maintain the conversion rate of CO constant even after 33 h. Modification of Ru/SiO2 by Zr (...
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Article
Dramatic improvement of catalyst life by rhodium and cerium additives for Ni-based reforming catalysts
Rhodium and cerium were found to be suitable additives for improving the sulfur-tolerance of Ni-based gasoline reforming catalysts. In these cases, the Rh content was only 0.1 wt.% with 5 wt.% of Ce. The lifet...
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Article
Propane formation by aqueous-phase reforming of glycerol over Pt/H-ZSM5 catalysts
Solid acid supports such as H-ZSM5, H-Mordenite, γ-Al2O3, USY and Beta catalysts were modified with Pt. These Pt/oxide catalysts were found to be active for propane formation through aqueous reforming of glycerol...
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Article
Synthesis of Zr-containing FSM-16 as an effective support for Co catalyst in the Fischer-Tropsch synthesis
Zr4+ ions have been introduced into the framework of FSM-16 using a sol-gel method at Si/Zr ≥ 200 (molar ratio). Co/Zr-FSM-16 showed high CO conversion and a high selectivity for C5+ hydrocarbons in the Fischer-T...
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Article
Fischer-Tropsch synthesis over Ru/Al2O3 catalysts
Fischer-Tropsch syntheses (FTS) were carried out in a slurry phase over Ru/Al2O3 catalysts using hexadecane as a solvent. The outcome of the FTS was dependent on the oxide support, calcination temperature, synthe...
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Article
Increase in the number of acid sites of a H-ZSM5 zeolite during the dehydration of ethanol
The activity of a H-ZSM5-90 for the dehydration of ethanol at 473 K increased with an increase in time on stream. The results of NH3-TPD and Ar adsorption showed that the number of acid sites of the H-ZSM5-90 inc...
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Article
Gas-phase radical generation by Ti oxide clusters supported on silica: application to the direct epoxidation of propylene to propylene oxide using molecular oxygen as an oxidant
A new catalytic system consisting of titanium oxide clusters supported on silica was found for radical production at relatively low temperature (~573 K). The clusters give rise to selective oxidation products,...
