Articles with "sio2 al2o3" as a keyword



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Aromatization of n-Butane and i-Butane over PtSnK/ZSM-5 Catalysts: Influence of SiO2/Al2O3 Ratio

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Published in 2018 at "Catalysis Letters"

DOI: 10.1007/s10562-018-2548-4

Abstract: This work reports on the effect of SiO2/Al2O3 ratio (25, 38, 50 and 80) on the physicochemical properties and performance of PtSnK/ZSM-5 catalysts in butanes aromatization process. It was found that the Pt dispersion decreased… read more here.

Keywords: ptsnk; sio2 al2o3; butane; ptsnk zsm ... See more keywords
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A study on the effect of SiO2/Al2O3 ratio on the structure and performance of nano-sized ZSM-5 in methanol to propylene conversion

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Published in 2017 at "Reaction Kinetics, Mechanisms and Catalysis"

DOI: 10.1007/s11144-017-1162-6

Abstract: The effect of SiO2/Al2O3 ratio on high silica content nano-sized HZSM-5 stability and selectivity in conversion of methanol to propylene (MTP) has been investigated in a continuous flow isotherm fixed-bed reactor. Highly crystalline HZSM-5 zeolite… read more here.

Keywords: effect sio2; sio2 al2o3; al2o3 ratio;
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Effect of Slag Composition on the Crystallization Kinetics of Synthetic CaO-SiO2-Al2O3-MgO Slags

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Published in 2018 at "Metallurgical and Materials Transactions B"

DOI: 10.1007/s11663-018-1167-1

Abstract: The crystallization kinetics of CaO-SiO2-Al2O3-MgO (CSAM) slags was studied with the aid of single hot thermocouple technique (SHTT). Kinetic parameters such as the Avrami exponent (n), rate coefficient (K), and effective activation energy of crystallization… read more here.

Keywords: al2o3 mgo; crystallization; sio2 al2o3; cao sio2 ... See more keywords
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Effect of the Cr2O3 and TiO2 as nucleating agents in SiO2-Al2O3-CaO-MgO glass-ceramic system

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Published in 2017 at "Metals and Materials International"

DOI: 10.1007/s12540-017-6714-9

Abstract: The nucleation agent is one of the most important factors in glass-ceramics as it can control either the crystallization temperature or the activation energy. In this study, we investigated the effect of two common nucleation… read more here.

Keywords: cr2o3; effect; nucleation; sio2 al2o3 ... See more keywords
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Investigation of the effect of HZSM-5 over HDS and reforming processes for clean gasoline production

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Published in 2018 at "International Journal of Environmental Science and Technology"

DOI: 10.1007/s13762-018-1661-7

Abstract: HZSM-5 catalysts with different SiO2/Al2O3 ratios were synthesized, and the effect of acidity over the octane enhancement alongside with desulfurization of heavy naphtha was investigated. In this way, the catalysts with the SiO2/Al2O3 ratios of… read more here.

Keywords: octane number; production; amount; effect ... See more keywords
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Volatilization behaviour and volatilization kinetics of CaF2–Na2O–CaO–SiO2–Al2O3–MgO–B2O3 synthetic mould flux

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Published in 2019 at "Journal of Iron and Steel Research International"

DOI: 10.1007/s42243-019-00245-7

Abstract: To reduce the volatilization of the volatile-containing slags and obtain accurate measurement results of slag performance, the volatility degree and deviation mechanism must be determined. Non-isothermal thermogravimetric analysis at different heating rates was used to… read more here.

Keywords: mould flux; sio2 al2o3; na2o cao; cao sio2 ... See more keywords
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Comparative study of thermo-physical properties of SiO2 and Al2O3 nanoparticles dispersed in PAG lubricant

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Published in 2017 at "Applied Thermal Engineering"

DOI: 10.1016/j.applthermaleng.2017.01.108

Abstract: Currently, the possibility to enhance fuel efficiency with cutting edge advancements is thoroughly investigated by researchers. One of the best ways to increase the fuel efficiency is by improving the performance of the automobile air… read more here.

Keywords: thermal conductivity; sio2 al2o3; nanoparticles dispersed; concentration ... See more keywords
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Optimization of combustion in micro combined heat and power (mCHP) system with the biomass-Stirling engine using SiO2 and Al2O3 nanofluids

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Published in 2020 at "Applied Thermal Engineering"

DOI: 10.1016/j.applthermaleng.2020.114936

Abstract: Abstract In this paper, a typical mCHP system was integrated by gamma type Stirling engine to meet electric, heating and hot water demands. The combustion test results, which is a key technology for small and… read more here.

Keywords: mchp system; system; sio2 al2o3; stirling engine ... See more keywords
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Quantitative arrangement of Si/Al ratio of natural zeolite using acid treatment

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Published in 2019 at "Applied Surface Science"

DOI: 10.1016/j.apsusc.2019.143874

Abstract: Abstract Acid treatment is an effective way to arrange SiO2/Al2O3 ratio of natural zeolite. However, limited researches have been done on quantitative regulation of SiO2/Al2O3 ratio of natural zeolite. In this paper, an orthogonal test… read more here.

Keywords: natural zeolite; zeolite; sio2 al2o3; ratio natural ... See more keywords
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Enhanced cracking conversion of supercritical fuel over stabilized Pt nanoparticles supported SiO2-Al2O3 catalyst coating

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Published in 2021 at "Applied Surface Science"

DOI: 10.1016/j.apsusc.2021.149950

Abstract: Abstract Catalytic cracking of fuel is an effective method to solve the thermal barrier of hypersonic aerocraft, but requires catalysts that are durable and highly active under high temperature. In this contribution, Pt nanoparticles loaded… read more here.

Keywords: sio2 al2o3; catalyst; cracking conversion; fuel ... See more keywords
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Catalytic performance of H-ZSM-5 zeolites for conversion of ethanol or ethylene to propylene: Effect of reaction pressure and SiO2/Al2O3 ratio

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Published in 2017 at "Catalysis Communications"

DOI: 10.1016/j.catcom.2016.12.010

Abstract: Abstract In this work, the conversions of ethanol to propylene and ethylene to propylene were investigated over H-ZSM-5 zeolite catalysts with different SiO2/Al2O3 ratios (80 and 280). The effect of operating conditions (contact time and… read more here.

Keywords: reaction pressure; ethylene propylene; effect; sio2 al2o3 ... See more keywords