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38篇 您的检索式:作者名="RASHIDZADEH"
    题名 作者 年代 出处 被引量
1SMFs-supported Pd nanocatalysts in selective acetylene hydrogenation:Pore structure-dependent deactivation mechanism显示文摘In the present study,CNFs,ZnO and Al2O3 were deposited on the SMFs panels to investigate the deactivation mechanism of Pd-based catalysts in selective acetylene hydrogenation reaction.The examined supports were characterized by SEM,NH3-TPD and N2adsorption-desorption isotherms to indicate their intrinsic characteristics.Furthermore,in order to understand the mechanism of deactivation,the resulted green oil was characterized using FTIR and SIM DIS.FTIR results confirmed the presence of more unsaturated constituents and then,more branched hydrocarbons formed upon the reaction over alumina-supported catalyst in comparison with the ones supported on CNFs and ZnO,which in turn,could block the pores mouths.Besides the limited hydrogen transfer,N2 adsorption-desorption isotherms results supported that the lowest pore diameters of Al2O3/SMFs close to the surface led to fast deactivation,compared with the other catalysts,especially at higher temperatures.Elaheh Esmaeili Ali Morad Rashidi Yadollah Mortazavi Abbas Ali Khodadadi Mehdi Rashidzadeh 2013Journal of Energy Chemistry2013,22,5:5
2Novel ZnO-Al_2O_3 composite particles as sorbent for low temperature H_2S removal显示文摘ZnO-Al2O3 composite particles composed of ZnO nanosheets(thickness of 40-80 nm) on alumina particles were prepared by heterogeneous precipitation method using bayerite seed particles.The asprepared composite particles were characterized in terms of crystal structure,morphology,surface area and pore volume.The composite particles were used as sorbent for H2S adsorption at low temperature, and were compared with pure ZnO sorbent.The composite sorbent showed a greater sulfur adsorption capacity(0.052 g/g) than pure form of ZnO(0.028 g/g).This significant improvement was mainly attributed to higher surface area,more pore volume and unique morphology in nanoscale,which were also obtained by low cost presented method in this work for synthesis of ZnO sorbent supported on alumina particles.Hamid Tajizadegan Mehdi Rashidzadeh Majid Jafari Reza Ebrahimi-Kahrizsangi 2013Chinese Chemical Letters2013,24,2:4
3An all-digital self-calibration method for a vernier- based time-to-digital converter 显示文摘RASHIDZADEH R AHMADI M MILLER W G 2010IEEE Trans Instru Measur2010,59,2:1
44-Lump kinetic model for vacuum gas oil hydrocracker involving hydrogen consumption显示文摘Sadighi S Ahmad A Rashidzadeh M 0,,04:1
5On- chip measurement of waveforms in mixed-signal circuits using a segmented subsampling technique显示文摘Rashidzadeh R Ahmadi M MiUer W C 2007Analog Integr Cite Sig Process2007,50,:1
6Preparation and anticorrosive properties of PANI/Na-MMT and PANI/O-MMT nanocomposites显示文摘Ali Olad Azam Rashidzadeh 2008Progress in Organic Coatings2008,,3:1
7On the preparation and swelling properties of hydrogel nanocomposite based on Sodium alginate- g-Poly (acrylic acid-co-acrylamide)/Clinoptilolite and its application as slow release fertilizer 显示文摘Rashidzadeh A Olad A Salari D 2014Journal of Polymer Research2014,21,21:1
8Robust indoor positioning using differential wi-fi access points 显示文摘Chang N Rashidzadeh R Ahmadi M 2010Consumer Electronics IEEE Transactions on2010,56,3:1
9Preparation and anticorrosive properties of PANI/Na-MMT and PANI/O-MMT nanocomposites显示文摘Ali Olad Azam Rashidzadeh 2008Progress in Organic Coatings2008,,62:1
10Preparation and anfieorrosive properties of PANI/Na-MMT and PANI/O-MMT nanocomposites 显示文摘Olad A Rashidzadeh A 2008Progress in Organic Coatings2008,62,3:1
11Preparation and anticorrosive properties of PAN1/MMT and PANI/o-MMT nanocomposites显示文摘Olad A Rashidzadeh A 2008Pmgr Ors Coating2008,62,:1
12n-Heptane isomeri- zation on a new kind of miero/mesoporous catalyst: Pt support- ed on HZSM-5/HMS 显示文摘ParsafardA Peyrovi M H Rashidzadeh M 2014Microporous Mesoporous Mater2014,200,:1
13Slow-released NPK fertilizer encapsulated by NaAlg -g- poly(AA- co -AAm)/MMT superabsorbent nanocomposite显示文摘Azam Rashidzadeh Ali Olad 2014Carbohydrate Polymers2014,,:1
14Preparation and characterization of polypyrrole/clinoptilolite nanocomposite with enhanced electrical conductivity by surface polymerization method显示文摘Azam Rashidzadeh Ali Olad Shirin Ahmadi 2012Polym Eng Sci2012,,5:1
15γ-A1203-Supported 12-Tungstosilicic Acid as an Efficient Heterogeneous Catalyst for the Synthesis of a-Aminonitrile显示文摘RAFIEE E RASHIDZADEH S JOSHAGHANI M 2008Synthetic Commun2008,38,16:1
164-Lump kinetic model for vacuum gas oil hydrocracker involving hydrogen consumption显示文摘Sadighi S Ahmad A Rashidzadeh M 2010Korean J Chem Eng2010,27,4:1
17An all-digital self-calibration method for a venire-based time-to-digital converter显示文摘Rashidzadeh R 2010IEEE Transactions on Instrumentation and Measurement2010,59,2:1
18Facile Growth of Porous Hierarchical Structure of ZnO Nanosheets on Alumina Particles via Heterogeneous Precipitation显示文摘ZnO nanosheets and nanoflakes were grown on alumina particles in the absence of surfactants via heterogeneous precipitation using urea,zinc acetate and bayerite as precursors.Thermo-gravimetric analysis(TGA),X-ray diffraction(XRD) and Fourier transform infrared spectroscopy(FTIR) were used and the results indicated the formation of only two phases: wurtzite-type ZnO and g-Al2O3.ZnO nanoflakes were grown on alumina particles in the samples with ZnO content of 40 and 60 wt%.By increasing the ZnO content to80 wt%,a porous hierarchical structure of ZnO with nanosheet arrays appeared.Both of these nanoflakes and nanosheets were about 40e80 nm in thickness and about 1e2 mm in diameter.It was proposed that Zn5(CO3)2(OH)6nuclei undergo higher growth rates in thin sheets at edges of bayerite particles with a higher surface energy.The BrunauereEmmetteTeller(BET) measurements proved a reachable high surface area for hierarchical structures of ZnO nanosheets,which could mainly be attributed to their unique growth on alumina particles.Also,UV absorption results revealed that ZnOeAl2O3compositions still show the UV characteristic absorption of ZnO,which can evidence the presence of photocatalytic properties in ZnOeAl2O3compositions.Hamid Tajizadegan Majid Jafari Mehdi Rashidzadeh Reza Ebrahimi-Kahrizsangi Omid Torabi 2013Journal of Materials Science & Technology2013,29,10:1
19Synthesis and characterization of one-Dimensional titanate manostructures via an alka- line hydrothermal method of a low surface area TiO2- Anatase显示文摘SAFAEI M RASHIDZADEH M SARRAF-MA- MOORY R 2010Ceramic Processing Research2010,11,2:1
20Structure Effects on Polyether Cationization by Alkali Metal Ions in Matrix-assisted Laser Desorption/Ionization显示文摘Wang Y Rashidzadeh H Guo B 2000J Am Soc Mass Spectrom2000,11,:1
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