Results 271 to 280 of about 6,556,606 (350)

High specific surface area SnO2 prepared by calcining Sn-MOFs and their formaldehyde-sensing characteristics

, 2020
In this study, micron-sized hollow hexagonal prisms of SnO2 have been successfully synthesized based on a metal-organic framework material, Sn-MOF. The structure, morphology and gas sensing performance of prepared products were investigated by XRD, SEM ...
Binghu Wang, S. Ma, S. Pei, Xiaoli Xu, P. Cao, Jun Zhang, R. Zhang, X. H. Xu, T. Han   +8 more
semanticscholar   +1 more source

Specific Surface Area

1994
The objectives of this analysis are: 1. To provide a basis for comparison of different shipments of each raw material for their consistency. 2. To provide a data point which, when combined with particle size distribution via the calculation of PCI (Particle Crowding Index), further provides calculated values of the characteristics of
James E. Funk, Dennis R. Dinger
openaire   +1 more source

Specific surface area of mercuric sulphide

Proceedings of the Indian Academy of Sciences - Section A, 1974
The specific surface area of mercuric sulphide (a) has been determined by three methods: (a) gas adsorption method (N2 adsorption), (b) air permeability method and (c) microscopic method. The area values are compared. In the gas adsorption method, the effect of degassing temperature on the surface area of solid was studied.
K. Venugopal Chetty, P. R. Naidu
openaire   +1 more source

Porosity, specific surface area and permeability in porous media

, 2021
In the present work, we obtained explicit formulas that relate permeability to porosity and specific surface area of pores and cracks. We show that Darcy's law is not an obligatory condition for the determination of fluid flow velocity; this empirical ...
B. Sibiryakov, L. Leite, E. Sibiriakov
semanticscholar   +1 more source

Coal-derived porous activated carbon with ultrahigh specific surface area and excellent electrochemical performance for supercapacitors

, 2020
Porous activated carbon material is successfully prepared with anthracite through KOH activation. The obtained activated carbon delivers a large specific surface area of 3550.7 m2 g-1 with existence of porous structure.
Mingchen Shi, Yanfei Xin, Xinxing Chen, Kunyang Zou, Weitao Jing, Junjie Sun, Yuanzhen Chen, Yongning Liu   +7 more
semanticscholar   +1 more source

Selective etching of C-N bonds for preparation of porous carbon with ultrahigh specific surface area and superior capacitive performance

, 2020
In consideration of the C-N bond is significantly weaker than C-C bond by about 30 kcal/mol, a selective etching of C-N bonds strategy has been put forward to prepare porous carbons with high specific surface area.
Pei Han, Mengsi Cheng, Donghai Luo, W. Cui, Huichao Liu, Jianguo Du, Mingliang Wang, Yiping Zhao, Li Chen, Caizhen Zhu, Jian Xu   +10 more
semanticscholar   +1 more source

ELECTRON MICROSCOPIC DETERMINATION OF SPECIFIC LEAF SURFACE AREA

American Journal of Botany, 1970
A method for the estimation of specific leaf surface area was developed as an aid in the interpretation of radionuclide penetration or gas diffusion data. The estimate was obtained by comparing the contour of the surface with the linear distance of the observed thin cross sections of a leaf replica.
J. J. C. Hsieh, J. M. Thomas
openaire   +1 more source

Specific Surface Area of Evaporated Aluminum

Journal of Applied Physics, 1962
The variations in the specific surface area of evaporated aluminum due to substrate temperature, film thickness, and angle of incidence have been determined experimentally. Increasing the substrate temperature from 0° to 100°C decreases the specific surface area by a factor as large as 9. Increasing the film thickness from 3000 to 12 000Å increases the
James W. Swaine, Robert C. Plumb
openaire   +1 more source

Specific Surface Area Measurements on Carbon Black

Rubber Chemistry and Technology, 1971
Abstract Various methods for estimating specific areas of carbon blacks are compared. These include the electron microscope count, methods based on adsorption of nitrogen, iodine and surfactants, and optical reflectance tests.
Jay Janzen, Gerard Kraus
openaire   +1 more source

Utilization of wheat bran for producing activated carbon with high specific surface area via NaOH activation using industrial furnace

Journal of Cleaner Production, 2019
Waste of wheat bran was used for the first time to prepare activated carbon with high specific surface area via sodium hydroxide activation. The effects of activation temperature (700–900 °C) and NaOH mass ratio (1–5) on surface area were studied ...
Ying Zhang, Xiaolan Song, Yue Xu, Haijing Shen, Xiaodong Kong, Hongmei Xu   +5 more
semanticscholar   +1 more source