The Use of Low Temperature van der Waals Adsorption Isotherms in Determining the Surface Area of Iron Synthetic Ammonia Catalysts

1937 ◽  
Vol 59 (8) ◽  
pp. 1553-1564 ◽  
Author(s):  
P. H. Emmett ◽  
S. Brunauer
Keyword(s):  
Low Temperature ◽  
Surface Area ◽  
Adsorption Isotherms ◽  
Van Der Waals

Synthesis of hexagonal boron nitride heterostructures for 2D van der Waals electronics

2018 ◽  
Vol 47 (16) ◽  
pp. 6342-6369 ◽  
Author(s):  
Ki Kang Kim ◽  
Hyun Seok Lee ◽  
Young Hee Lee
Keyword(s):  
Boron Nitride ◽  
Surface Area ◽  
Hexagonal Boron Nitride ◽  
Van Der Waals ◽  
Large Surface Area ◽  
Van Der Waals Heterostructures

The construction of large surface area hexagonal boron nitride for van der Waals heterostructures and 2D-layered electronics is reviewed.

Low-temperature p-type ohmic contact to WSe2 using p+-MoS2/WSe2 van der Waals interface

2020 ◽  
Vol 117 (15) ◽  
pp. 153101
Author(s):  
Kei Takeyama ◽  
Rai Moriya ◽  
Kenji Watanabe ◽  
Satoru Masubuchi ◽  
Takashi Taniguchi ◽  
...  
Keyword(s):  
Low Temperature ◽  
Ohmic Contact ◽  
Van Der Waals ◽  
P Type

PERMEABILITY STUDIES: III. SURFACE AREA MEASUREMENTS OF CARBON BLACKS

1948 ◽  
Vol 26a (2) ◽  
pp. 29-38 ◽  
Author(s):  
J. C. Arnell ◽  
G. O. Henneberry
Keyword(s):  
Electron Microscope ◽  
Low Temperature ◽  
Carbon Black ◽  
Surface Area ◽  
Satisfactory Agreement ◽  
Nitrogen Adsorption ◽  
Average Particle ◽  
Carbon Blacks ◽  
Permeability Studies ◽  
Nitrogen Adsorption Isotherms

The modified Kozeny equation has been found to be satisfactory for the measurement of the specific surfaces of carbon blacks having average particle diameters ranging from 0.01 to 0.1 μ to within ±10%. Comparative data were obtained from electron microscope counting and from low temperature nitrogen adsorption isotherms. The three methods examined gave results that were in satisfactory agreement, except when the carbon black was porous, and then the adsorption value was extremely large.

scholarly journals Flower-like boehmite nanopowders obtained at low temperature from Bayer liquor

2020 ◽  
Vol 14 (2) ◽  
pp. 168-172
Author(s):  
Marija Milanovic ◽  
Zoran Obrenovic ◽  
Ivan Stijepovic ◽  
Ljubica Nikolic
Keyword(s):  
Low Temperature ◽  
Specific Surface ◽  
Surface Area ◽  
Industrial Production ◽  
Single Phase ◽  
Low Cost ◽  
High Specific Surface Area ◽  
Nanocrystalline Powders ◽  
Transition Alumina ◽  
Bayer Liquor

Boehmite nanocrystalline powders were obtained by neutralization of Bayer liquor at 70?C with addition of glucose. Temperature of the neutralization induced formation of the flower-like morphology of the nanopowders. XRD and FTIR results confirmed that the single phase boehmite is formed without any other impurities. Calcination at 500?C led to the formation of transition -alumina with the retention of the flower-like morphology. Both as-synthesised and calcined powders possessed high specific surface area with mesopores between 3-6 nm in diameter. Relatively low temperature of neutralization as well as the use of low cost and ecologically friendly glucose as a surfactant are very promising for the possible application in the industrial production of alumina nanopowders.

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