Direct conversion of cellulose into ethanol catalysed by a combination of tungstic acid and zirconia-supported Pt nanoparticles

2019 ◽  
Vol 55 (30) ◽  
pp. 4303-4306 ◽  
Author(s):  
Haiyan Song ◽  
Pan Wang ◽  
Shi Li ◽  
Weiping Deng ◽  
Yanyun Li ◽  
...  
Keyword(s):  
Aqueous Medium ◽  
Pt Nanoparticles ◽  
Direct Conversion ◽  
Tungstic Acid

Direct conversion of cellulose to ethanol is achieved by using a combination of H2WO4 and Pt/ZrO2 catalysts in an aqueous medium.

Visible light-induced direct conversion of aldehydes into nitriles in aqueous medium using Co@g-C3N4 as photocatalyst

2019 ◽  
Vol 119 ◽  
pp. 76-81 ◽  
Author(s):  
Fooleswar Verma ◽  
Prashant Shukla ◽  
Smita R. Bhardiya ◽  
Manorama Singh ◽  
Ankita Rai ◽  
...  
Keyword(s):  
Visible Light ◽  
Aqueous Medium ◽  
Direct Conversion

Unusual Photochemical Transformation of 5-Ethylorotate to 5-Ethylidenehydroorotate

1976 ◽  
Vol 31 (9-10) ◽  
pp. 514-517 ◽  
Author(s):  
E Kulikowska ◽  
B Hingerty ◽  
W Saenger ◽  
D Shugar
Keyword(s):  
Solid State ◽  
Aqueous Medium ◽  
Ultraviolet Irradiation ◽  
Direct Conversion ◽  
X Ray Diffraction ◽  
X Ray ◽  
Alternate Pathway ◽  
Pyrimidine Analogue ◽  
Ethylene Group ◽  
Hydrogen Rearrangement

Abstract Ultraviolet irradiation of 5-ethylorotate in aqueous medium led to formation of 5-ethylidene-hydroorotate via a 1,3-hydrogen rearrangement from the ethylene group of the 5-substituent to the ring C6 . The same product was also obtained by an alternate pathway via a hitherto un­identified intermediate. The structure of this unusual pyrimidine analogue, established in the solid state by X-ray diffraction, was shown with the aid of spectroscopic methods to be the same in solution, and some of its properties are described. Heating of 5-ethylidenehydroorotate in the solid state led by direct conversion to a mixture of the parent 5-ethylorotate and 5-ethyluracil. By contrast, ultraviolet irradiation in aqueous medium resulted in quantitative photochemical conversion of the photoproduct to 5-ethyluracil.

scholarly journals Neutron detection with integrated sub-2 nm Pt nanoparticles and 10B enriched dielectrics—A direct conversion device

2016 ◽  
Vol 9 ◽  
pp. 1-6 ◽  
Author(s):  
Haisheng Zheng ◽  
Balavinayagam Ramalingam ◽  
Somik Mukherjee ◽  
Yang Zhou ◽  
Keshab Gangopadhyay ◽  
...  
Keyword(s):  
Pt Nanoparticles ◽  
Neutron Detection ◽  
Direct Conversion

Use of the Magnetostatic Analogue In Electromagnetic Lens Engineering

1970 ◽  
Vol 28 ◽  
pp. 360-361
Author(s):  
John W. Coleman
Keyword(s):  
Boundary Conditions ◽  
High Performance ◽  
Force Fields ◽  
Optical Design ◽  
Direct Conversion ◽  
Design Engineering ◽  
Design Data ◽  
Scalar Potentials ◽  
Geometric Elements ◽  
At Will

In the design engineering of high performance electromagnetic lenses, the direct conversion of electron optical design data into drawings for reliable hardware is oftentimes difficult, especially in terms of how to mount parts to each other, how to tolerance dimensions, and how to specify finishes. An answer to this is in the use of magnetostatic analytics, corresponding to boundary conditions for the optical design. With such models, the magnetostatic force on a test pole along the axis may be examined, and in this way one may obtain priority listings for holding dimensions, relieving stresses, etc..The development of magnetostatic models most easily proceeds from the derivation of scalar potentials of separate geometric elements. These potentials can then be conbined at will because of the superposition characteristic of conservative force fields.

Rheological behaviour of the condensed suspension of fluorinated montmorillonite “rassoul” particles in aqueous medium

2005 ◽  
Vol 123 ◽  
pp. 341-344
Author(s):  
A. Khaldoun ◽  
F. González-Caballero ◽  
J. G. López-Durán ◽  
N. Mahrach ◽  
M. L. Kerkeb
Keyword(s):  
Aqueous Medium ◽  
Rheological Behaviour
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