Preparation of a Highly Dispersed Powder of Tin Monoxide by the Evaporation/Condensation Method under Heating with Focused Radiation of a Subterahertz Gyrotron

2021 ◽  
Author(s):  
A. I. Tsvetkov ◽  
A. V. Vodopyanov ◽  
D. A. Mansfel’d ◽  
A. A. Orlovskii ◽  
S. A. Bulanova ◽  
...  
Keyword(s):  
Condensation Method ◽  
Highly Dispersed ◽  
Tin Monoxide

scholarly journals Получение высокодисперсного порошка монооксида олова методом испарения-конденсации при нагреве сфокусированным излучением субтерагерцевого гиротрона

2021 ◽  
Vol 47 (5) ◽  
pp. 51
Author(s):  
А.И. Цветков ◽  
А.В. Водопьянов ◽  
Д.А. Мансфельд ◽  
А.А. Орловский ◽  
С.А. Буланова ◽  
...  
Keyword(s):  
Particle Size ◽  
Specific Surface ◽  
Average Particle Size ◽  
Condensation Process ◽  
Average Particle ◽  
Experimental Setup ◽  
Initial Material ◽  
Condensation Method ◽  
Weight Content ◽  
Highly Dispersed

A method of obtaining highly dispersed tin (II) oxide (SnO) powder by the evaporation-condensation method was investigated when the initial material was heated by focused radiation of a subterahertz gyrotron with a frequency of 0.26 THz and a power of 1 kW. The process was carried out with a purge with nitrogen inert with respect to SnO. A powder with a SnO weight content of 92% was obtained. The specific surface was 7.20 m2/g, which corresponds to an average particle size of 130 nm. The characteristics of the obtained powder are analyzed. The applicability of the experimental setup for the production of nanopowders from compounds requiring special gas conditions during the evaporation-condensation process has been demonstrated.

Highly dispersed MnOx–FeOx supported by silicalite-1 for the selective catalytic reduction of NOx with NH3 at low temperatures

2020 ◽  
Vol 10 (16) ◽  
pp. 5525-5534 ◽  
Author(s):  
Jialiang Gu ◽  
Bingjun Zhu ◽  
Rudi Duan ◽  
Yan Chen ◽  
Shaoxin Wang ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Low Temperatures ◽  
Catalytic Reduction ◽  
Highly Dispersed ◽  
Reduction Of Nox

MnOx–FeOx-Loaded silicalite-1 catalysts exhibit high NOx conversion at low temperatures.

Interlayer confinement synthesis of Ir nanodots/dual carbon as an electrocatalyst for overall water splitting

2020 ◽  
Author(s):  
Yaru Li ◽  
Yu-Quan Zhu ◽  
Weili Xin ◽  
Song Hong ◽  
Xiaoying Zhao ◽  
...  
Keyword(s):  
Water Splitting ◽  
Noble Metal ◽  
High Efficiency ◽  
Overall Water Splitting ◽  
Highly Dispersed

Rationally designing low-content and high-efficiency noble metal nanodots offers opportunities to enhance electrocatalytic performances for water splitting. However, the preparation of highly dispersed nanodots electrocatalysts remains a challenge. Herein, we...

Preparation of conjugates of uridine with proteins by the imido ester condensation method

1981 ◽  
Vol 46 (4) ◽  
pp. 933-940 ◽  
Author(s):  
Helmut Pischel ◽  
Antonín Holý ◽  
Günther Wagner
Keyword(s):  
Human Serum ◽  
Acid Hydrolysis ◽  
Ester Hydrochloride ◽  
Protein Conjugates ◽  
Condensation Method ◽  
Ester Condensation ◽  
Acid Catalyzed

Reaction of 5'-O-p-toluenesulfonyl-2',3'-O-isopropylideneuridine (I) with sodium 4-cyanophenoxide afforded 2',3'-O-isopropylidene-5'-O-(4-cyanophenyl)uridine (II) which was converted by acid hydrolysis into 5'-O-(4-cyanophenyl)uridine (IIIa). Acid-catalyzed addition of ethanol to compound IIIa gave the imido ester hydrochloride IIIb which on reaction with ammonia or ethylamine was transformed into the amidine derivatives IIIc and IIId. Compound IIIb reacted with human serum albumine or bovine gamma-globuline at pH 9.2 to give protein conjugates with uridine, bound covalently by an amidine bond (IIIe,f).

scholarly journals Highly dispersed, single-site copper catalysts for the electroreduction of CO2 to methane

2020 ◽  
Vol 875 ◽  
pp. 113862 ◽  
Author(s):  
Teng Zhang ◽  
Sumit Verma ◽  
Soojeong Kim ◽  
Tim T. Fister ◽  
Paul J.A. Kenis ◽  
...  
Keyword(s):  
Copper Catalysts ◽  
Single Site ◽  
Highly Dispersed

Separation of highly dispersed carbon material of OU-B grade from aqueous solutions using electroflotation technique

2020 ◽  
Vol 245 ◽  
pp. 116861
Author(s):  
Anastasia Gaydukova ◽  
Vladimir Kolesnikov ◽  
Alyona Stoyanova ◽  
Artem Kolesnikov
Keyword(s):  
Aqueous Solutions ◽  
Carbon Material ◽  
Highly Dispersed

COx-free hydrogen production via ammonia decomposition over mesoporous Co/Al2O3 catalysts with highly dispersed Co species synthesized by a facile method

2021 ◽  
Author(s):  
Yingqiu Gu ◽  
Di Xu ◽  
Yun Huang ◽  
Zhouyang Long ◽  
Guojian Chen
Keyword(s):  
Fuel Cells ◽  
Hydrogen Production ◽  
Transition Metal ◽  
Transition Metals ◽  
Ammonia Decomposition ◽  
Metal Catalyst ◽  
Facile Synthesis ◽  
Transition Metal Catalyst ◽  
Highly Dispersed ◽  
Free Hydrogen

Transition metals have been considered as potential catalysts for ammonia decomposition to produce COx-free hydrogen for fuel cells. However, the facile synthesis of transition metal catalyst with small size active...

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