Results 11 to 20 of about 57,985 (299)
The influence of porosity on nanoparticle formation in hierarchical aluminophosphates [PDF]
Beilstein Journal of Nanotechnology, 2019 In this work we explore the deposition of gold onto a silicoaluminophosphate, using a variety of known nanoparticle deposition techniques. By comparing the gold particles deposited on a traditional microporous aluminophosphate, with an analogous ...
Matthew E. Potter +5 more
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Gradient-Hierarchic-Aligned Porosity SiOC Ceramics [PDF]
Scientific Reports, 2017 AbstractThis work describes a simple technique to produce porous ceramics with aligned porosity having very high permeability and specific surface area. SiOC-based compositions were processed from blends of three types of preceramic polymer and a catalyst, followed by curing and pyrolysis.
Vakifahmetoglu, Cekdar +5 more
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Hierarchical integration of porosity in shales [PDF]
Scientific Reports, 2018 AbstractPore characterization in shales is challenging owing to the wide range of pore sizes and types present. Haynesville-Bossier shale (USA) was sampled as a typical clay-bearing siliceous, organic-rich, gas-mature shale and characterized over pore diameters ranging 2 nm to 3000 nm.
Lin Ma +6 more
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Applied Sciences, 2020 In the present study, the performance of four biomass-derived physically activated biochars for dynamic CO2 capture was assessed. Biochars were first produced from vine shoots and wheat straw pellets through slow pyrolysis (at pressures of 0.1 and 0.5 ...
Joan J. Manyà +2 more
doaj +1 more source
Synergetic Effects of Hierarchical Porosity, Chemical, Acidic, and Hydrothermal Modification of the NaY Zeolite and Its Simultaneous Use in the Technology of the Fluid Catalytic Cracking (FCC) [PDF]
Iranian Journal of Chemistry & Chemical EngineeringCurrently, Fluid Catalytic Cracking (FCC) is one of the largest and most important conversion technologies in the oil refinery industry. In this regard, cracking activity and selectivity are influenced by some factors like acid activation, surface area ...
Mahta Badienezhad +2 more
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Structural models of random packing of spheres extended to bricks: Simulation of the nanoporous calcium silicate hydrates [PDF]
, 2009 Structure simulation algorithms of random packing of spheres and bricks have been developed. These algorithms were used to reproduce the nanostructure of the cementitious calcium silicate hydrates. The textural parameters (specific surface area, porosity,
Brunet, Fabrice +1 more
core +3 more sources
Hierarchical Porosity Ceramic Components from Preceramic Polymers [PDF]
, 2009 Cellular SiOC ceramic components with a porosity > 70 vol% and cell size dimension ranging from 10 μm to a few mm approximately have been developed using a silicone resin. These cellular materials have been further functionalized by developing a high specific surface area (SSA), which is useful for applications such as absorbers or catalyst supports ...
COLOMBO, PAOLO +8 more
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Hierarchical porosity in real quasicrystals
Philosophical Magazine Letters, 1998 The structure of real icosahedral quasicrystals of the Al-Pd-Mn system can be described in terms of a hierarchical self-similar packing of overlapping atomic clusters. An inflation scale factor tau 3 preserves long-range order but generates a hierarchy of holes and a fractal structure.
L. Mancini +5 more
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Functionally heterogeneous porous scaffold design for tissue engineering [PDF]
, 2012 Most of the current tissue scaffolds are mainly designed with homogeneous porosity which does not represent the spatial heterogeneity found in actual tissues.
Khoda, AKM B. +2 more
core +2 more sources
Royal Society Open Science, 2021 Hierarchical zeolites have the potential to provide a breakthrough in transport limitation, which hinders pristine microporous zeolites and thus may broaden their range of applications. We have explored the use of Pd-doped hierarchical ZSM-5 zeolites for
Shengzhe Ding +8 more
doaj +1 more source