A-1 Preparation of Micro-porous Alumina Support by Extrusion(Session: Ceramics I)

ZnO-TiO2 nanoparticles were synthesized by a reverse micelle and sol-gel process. The average particle size of the colloid was below 30 nm and well dispersed in the solution. ZnOTiO2 composite membranes were fabricated by using the dip-coating method on a porous alumina support. ZnO-TiO2 composite membranes showed a crack-free microstructure and narrow particle size distribution even after the heat treatment up to 600°C. The average particle size of the membrane was 30-40nm, and the pore size of ZnO-TiO2 composite membrane was below 10 nm.

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Spray drying of porous alumina support for Fischer-Tropsch catalysis

Scientific Bases for the Preparation of Heterogeneous Catalysts - Proceedings of the 10th International Symposium, Louvain-la-Neuve, Belgium, July 11-15, 2010 - Studies in Surface Science and Catalysis ◽

10.1016/s0167-2991(10)75136-3 ◽

2010 ◽

pp. 685-688 ◽

Cited By ~ 2

Author(s):

Anna Lind ◽

Rune Myrstad ◽

Sigrid Eri ◽

Torild Hulsund Skagseth ◽

Erling Rytter ◽

...

Keyword(s):

Spray Drying ◽

Porous Alumina ◽

Fischer Tropsch ◽

Alumina Support

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Synthesis of MCM-22 Zeolite Membrane on a Porous Alumina Support

Materials Science Forum ◽

10.4028/www.scientific.net/msf.805.272 ◽

2014 ◽

Vol 805 ◽

pp. 272-278 ◽

Cited By ~ 1

Author(s):

Antonielly dos S. Barbosa ◽

Antusia dos S. Barbosa ◽

Meiry Glaucia F. Rodrigues

Keyword(s):

Porous Alumina ◽

Mercury Porosimetry ◽

Secondary Growth ◽

Molecular Size ◽

Zeolite Membrane ◽

X Ray Diffraction ◽

Alumina Support ◽

X Ray ◽

Ceramic Support ◽

Separation Of Mixtures

Much interest has been aroused in the application in industrial processes using zeolite membrane, due to its crystalline structure, and narrow pore diameters. These features enable the continuous separation of mixtures based on differences in molecular size and shape and also based on different adsorption properties. This paper reports the synthesis of MCM-22 zeolite membrane, using the method of secondary growth. The MCM-22 zeolite was synthesized by the hydrothermal method and characterized by spectroscopy Energy Dispersive X-ray (EDX), X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM).The ceramic support (α-alumina) was prepared using the technique of forming powder and then subjected to the sintering temperature of 1400 °C/1h and characterized by XRD. The zeolite membrane preparation was performed by the method of secondary growth and characterized by XRD, SEM and mercury porosimetry. The obtained zeolite membrane could be confirmed by X-ray diffraction. From, the obtained SEM pictures it was possible to observe the formation of a homogeneous film on the zeolite surface of the ceramic support (α-alumina).

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Fabrication and Properties of Alumina Flat Sheet Membrane Surports

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.955-959.601 ◽

2014 ◽

Vol 955-959 ◽

pp. 601-604

Author(s):

De Xiang Liao ◽

An Chao Geng ◽

Peng Hao Su ◽

Dao Lun Feng ◽

Lin Lin Wang

Keyword(s):

Sintering Temperature ◽

Porous Alumina ◽

Pure Water ◽

Porous Ceramic ◽

Water Flux ◽

Carbon Powder ◽

Pore Former ◽

Alumina Support ◽

Ceramic Support ◽

Flat Sheet Membrane

The porous ceramic support was realized at various temperature range from 1200°C~1300°C using α-Al2O3 as main material, carbon powder as pore-former, kaolin clay and titanium dioxide as sintering aids and polyvinyl alcohol (PVA) as adhesives. The microstructures of sintered body were significantly affected by the amount of pore-former and sintering temperature. The results indicated that the porosity dramatically increased and the pore radius increased from 2.9 μm to 3.2 μm as carbon powder addition increased from 3 wt.% to 12 wt.%. Correspondingly, their pure water flux depending on the pore structure parameters of the support increased from 1.37 to 4.53 m3.m-2.h-1.bar-1. To prepare porous alumina support with 40% open porosity, carbon powder up to 10 wt.% is appropriate. Sintering experiments showed that the optimum sintering conditions are the sintering temperature of 1300 °C and 2 h holding time at this temperature.

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Effects of Porous Alumina Support and Plating Time on Electroless Plating of Palladium Membrane

Journal of Material Science and Technology ◽

10.1016/s1005-0302(11)60016-9 ◽

2010 ◽

Vol 26 (12) ◽

pp. 1148-1152 ◽

Cited By ~ 27

Author(s):

Mettaya Kitiwan ◽

Duangduen Atong

Keyword(s):

Electroless Plating ◽

Porous Alumina ◽

Alumina Support ◽

Palladium Membrane

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Infiltration of precursors into a porous alumina support for ZIF-8 membrane synthesis

Microporous and Mesoporous Materials ◽

10.1016/j.micromeso.2012.09.029 ◽

2013 ◽

Vol 168 ◽

pp. 15-18 ◽

Cited By ~ 45

Author(s):

Lunxi Li ◽

Jianfeng Yao ◽

Rizhi Chen ◽

Li He ◽

Kun Wang ◽

...

Keyword(s):

Porous Alumina ◽

Membrane Synthesis ◽

Alumina Support

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Electroless Plating of Pd on Macro-Porous Alumina Support for H2 Purification

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.675-676.556 ◽

2016 ◽

Vol 675-676 ◽

pp. 556-559

Author(s):

Kowit Lertwittayanon ◽

Onuma Truektrong ◽

Wanita Inthanu ◽

Wirote Youravong

Keyword(s):

Electroless Plating ◽

Annealing Temperature ◽

Metal Layer ◽

Porous Alumina ◽

Support Surface ◽

Sem Images ◽

Alumina Support ◽

Porous Support ◽

Small Cracks ◽

Porous Disc

In this work, Pd metal layer was deposited on in-house prepared macro-porous disc alumina support by electroless plating. The in-house prepared support were repeatedly seeded for 4 cycles to obtain Pd nuclei before repeatedly electroless plated for 4 cycles. The 4-cycle Pd plating was to obtain the full layer of Pd metal observing from changing support surface from black to light grey. The plated membrane samples were annealed at 550 and 600oC for using in high-temperature H2 separation. The annealed samples were observed morphology by SEM and confirm the occurrence of Pd layer with EDS. The SEM images revealed incomplete Pd layer. The over 4 cycles of plating were needed to form complete Pd layer since the numerous Pd ions diffused into macro-pores alumina support instead of depositing on the surface of macro-porous support. The higher annealing temperature of 600oC led to denser layer of Pd with the presence of small cracks due to the contraction of Pd particles.

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Selective Deposition of Pd on Porous Alumina Support Using Supercritical CO2

MRS Proceedings ◽

10.1557/proc-752-aa12.1 ◽

2002 ◽

Vol 752 ◽

Author(s):

Masahiko Matsukata ◽

Takashi Nishizuka ◽

Yasushi Sekine ◽

Eiichi Kikuchi

Keyword(s):

Thermal Decomposition ◽

Supercritical Co2 ◽

Hydrogen Permeation ◽

Porous Alumina ◽

Diffusion Mechanism ◽

Pore Filling ◽

Alumina Support ◽

Hydrogen Flux ◽

Pd Membrane ◽

High Separation

ABSTRACTA Pd/α-Al2O3 composite membrane was prepared on a porous α-Al2O3 disk via the thermal decomposition of bis(hexafluoroacetylacetonato)Pd(II), Pd(hfac)2. Pd(hfac)2 was dissolved in supercritical CO2 at 303 K, supplied to the substrate, and thermally decomposed at 403 and 443 K. The decomposition of Pd(hfac)2 at 443 K resulted in a sufficient pore filling of substrate with Pd as well as the formation of a thin Pd top layer. The hydrogen flux through this membrane was about 1.7 times than that of a electro-less plating Pd membrane with about 20 μm thick. Hydrogen permeation was governed by the solution-diffusion mechanism which gave a high separation selectivity.

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