scholarly journals Effect of particle size on adsorption kinetics of water vapor on porous aluminium oxide material

2019 ◽  
Vol 1145 ◽  
pp. 012033 ◽  
Author(s):  
S Reshetnikov ◽  
Zh Budaev ◽  
A Livanova ◽  
E Meshcheryakov ◽  
I Kurzina
Keyword(s):  
Particle Size ◽  
Water Vapor ◽  
Adsorption Kinetics ◽  
Aluminium Oxide ◽  
Oxide Material ◽  
Effect Of Particle Size ◽  
Kinetics Of

Size and shape dependences of the adsorption kinetics of malachite green on nano-MgO: a theoretical and experimental study

2019 ◽  
Vol 21 (25) ◽  
pp. 13721-13729
Author(s):  
Zixiang Cui ◽  
Jiayi Liu ◽  
Huifang Gao ◽  
Yongqiang Xue ◽  
Jie Hao ◽  
...  
Keyword(s):  
Experimental Study ◽  
Particle Size ◽  
Malachite Green ◽  
Adsorption Kinetics ◽  
Bulk Materials ◽  
Size And Shape ◽  
Particle Size And Shape ◽  
Kinetics Of

Compared with bulk materials, there is a considerable difference in the adsorption kinetics of nanoparticles, which mainly depend on particle size and shape.

scholarly journals Kinetics and Photodegradation Study of Aqueous Methyltert-Butyl Ether Using Zinc Oxide: The Effect of Particle Size

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Zaki S. Seddigi ◽  
Saleh A. Ahmed ◽  
Shahid P. Ansari ◽  
Ekram Danish ◽  
Abdullah Abu Alkibash ◽  
...  
Keyword(s):  
Particle Size ◽  
Zinc Oxide ◽  
Order Reaction ◽  
Average Particle ◽  
Particle Sizes ◽  
Mercury Lamp ◽  
Butyl Ether ◽  
First Order ◽  
Effect Of Particle Size ◽  
Kinetics Of

Zinc oxide of different average particle sizes 25 nm, 59 nm, and 421 nm as applied in the photodegradation of MTBE. This study was carried out in a batch photoreactor having a high pressure mercury lamp. Zinc oxide of particle size of 421 nm was found to be the most effective in degrading MTBE in an aqueous solution. On using this type of ZnO in a solution of 100 ppm MTBE, the concentration of MTBE has decreased to 5.1 ppm after a period of five hours. The kinetics of the photocatalytic degradation of MTBE was found to be a first order reaction.

Effect of Particle Size Distribution on Hydration Kinetics

1986 ◽  
Vol 85 ◽  
Author(s):  
James M. Pommersheim
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Reaction Diffusion ◽  
Hydration Kinetics ◽  
Kinetic Rate ◽  
Degree Of Hydration ◽  
Effect Of Particle Size ◽  
Kinetics Of ◽  
Single Size

ABSTRACTA general method has been developed for determining the effects of particle size distribution (PSD) on the kinetics of hydration. Given the PSD and the kinetic rate for particles having a single size, expressions can be derived for the variation of the total degree of hydration with time. The method was applied to PSD and kinetic functions typical of cement systems that account for reaction, diffusion and expansion of spherical hydrate layers. The PSD was found to critically affect the kinetics. A key feature of the theory follows with time those particles that have become totally hydrated, so-called “dead” particles. This produces a dead-particle hydration curve having approximately the same shape and location as the overall hydration curve. It can be represented analytically in all cases and gives a measure of the disguise provided by the distribution.

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