STUDY OF POROUS MATERIALS AND SORPTION METHODS FOR DETERMINING THE PARAMETERS OF POROUS STRUCTURE AND FRACTAL MESOPORES DIMENSION ANALYSIS

2018 ◽  
Vol 66-2 ◽  
pp. 49-54
Author(s):  
K. N. Khalugarova ◽  
Keyword(s):  
Porous Structure ◽  
Porous Materials ◽  
Dimension Analysis ◽  
Parameters Of Porous Structure

APPLICATIONS OF ELECTROPHORETIC DEPOSITION IN THE COATING AND POROUS MATERIALS FABRICATIONS

2006 ◽  
Vol 13 (01) ◽  
pp. 103-109 ◽  
Author(s):  
LIANG YAO ◽  
CHUANZHONG CHEN ◽  
DIANGANG WANG ◽  
QUANHE BAO ◽  
JIE MA ◽  
...  
Keyword(s):  
Porous Structure ◽  
Porous Materials ◽  
Electrophoretic Deposition ◽  
Solid Surface ◽  
Complex Shape ◽  
Good Method ◽  
Processing Parameters ◽  
Surface Coatings ◽  
Coating Materials ◽  
Gradient Materials

Electrophoretic deposition (EPD) is a good method in the fabrication of the coating materials. Its processing parameters are easy to be operate. It is a nonbeeline process and can be used in the deposition on complex shape and porous surface. It has been widely used in many ways. This paper reviews the principles and fabrication steps of EPD and points out the influencing factors. The developments of EPD in the fabrication of materials, such as solid surface coatings, porous structure materials and gradient materials, are introduced in detail. The future of the application of EPD is also discussed.

scholarly journals From Metal-Organic Framework Powders to Shaped Solids: Recent Developments and Challenges

2021 ◽  
Author(s):  
Bakytzhan Yeskendir ◽  
Jean-Philippe Dacquin ◽  
Yannick Lorgouilloux ◽  
Christian Courtois ◽  
Sebastien Royer ◽  
...  
Keyword(s):  
Porous Structure ◽  
Porous Materials ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
The Past ◽  
Recent Developments ◽  
Metal Organic ◽  
Organic Framework

Metal-organic frameworks represent a class of porous materials which developed considerably over the past few years. Their porous structure makes them outperforming conventional adsorbents in hot topics such as dihydrogen...

scholarly journals Features of determining the parameters of the porous structure of ceramic materials

2019 ◽  
Vol 1 (5) ◽  
pp. 117-121
Author(s):  
Yu. N. Kryuchkov
Keyword(s):  
Porous Structure ◽  
Porous Materials ◽  
Pore Volume ◽  
Mercury Porosimetry ◽  
Ceramic Materials ◽  
Large Error ◽  
Volume Distribution ◽  
Capillary Effects ◽  
Percolation Effect ◽  
Liquid Displacement

The methods for determining the pore volume distribution by the size of porous materials are analyzed and it is shown that the most rigorous are methods in which capillary effects do not appear. It is shown that mercury porosimetry and the method of liquid displacement by gas have a large error in the region of large pores. This is due to the percolation effect. It is proved that determining the distribution of pore volume from measurements of air flow gives too distorted results, so its use is not advisable.

Facile preparation of MOF-derived MHCo3O4 & Co/C with hierarchical porous structure for entrapping enzyme: Having both high stability and catalytic activity

2021 ◽  
Author(s):  
Xia Gao ◽  
Huibin Pan ◽  
Chengfang Qiao ◽  
Yongliang Liu ◽  
Chun-Sheng Zhou ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Porous Structure ◽  
Porous Materials ◽  
Hierarchical Structure ◽  
High Stability ◽  
The Self ◽  
Hierarchical Porous Structure ◽  
Sacrificial Template ◽  
Hierarchical Porous ◽  
Facile Preparation

MOF-derived porous materials Co3O4 and Co/C with hierarchical structure (MHCo3O4 & Co/C) were prepared by the self-sacrificial template strategy, and the surface of such materials were functionally modified with "polydopamine...

Evaluation of Thermal Stability of Porous Material by Sintering Stress

2006 ◽  
Vol 317-318 ◽  
pp. 683-688
Author(s):  
Fumihiro Wakai ◽  
Yutaka Shinoda ◽  
Takashi Akatsu
Keyword(s):  
Thermal Stability ◽  
Porous Material ◽  
Porous Structure ◽  
Porous Materials ◽  
Difference Method ◽  
Energy Difference ◽  
Force Balance ◽  
Pore Surface ◽  
Porous Structures ◽  
Thermal Stability Of

The sintering stress is related to the thermal stability of porous structure. The sintering stress for a given porous structure in equilibrium can be calculated by three methods theoretically; the energy difference method, the curvature method, and the force balance method. The sintering stresses by three different methods were exactly the same for the idealized porous materials in equilibrium, in which the pore surface had a constant curvature at any point. The porous material does not spontaneously shrink when the sintering stress becomes zero or negative. The sintering stress will be used to design optimal porous structures with improved thermal stability.

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