نتایج جستجو برای: selective oxidation of propane

تعداد نتایج: 21188084  

Journal: :Earth System Science Data 2022

Abstract. Methane, ethane, and propane are among the most abundant hydrocarbons in atmosphere. These compounds have many emission sources common all primarily removed through OH oxidation. Their mixing ratios long-term trends upper troposphere stratosphere rarely reported due to paucity of measurements. In this study, we present (2006–2016) northern hemispheric propane, methane data from airbor...

2005
Carlo Resini Tania Montanari Guido Busca Jih-Mirn Jehng Israel E. Wachs

The surface chemistry of adsorbed isopropoxy groups on supported vanadia–alumina and vanadia–silica catalysts was investigated with multiple in situ spectroscopic techniques. The in situ FT-IR, Raman and UV–vis spectroscopic measurements provided molecular level information about the surface intermediates and the surface vanadium oxide species as a function of different conditions. The spectros...

2013
Saad Al-Sabbagh

From different sources of carbon , propane have been chosen to get a wider band gap amorphous silicon alloy . After analyzing the conductivity and optical gap variation with the doping ratio , the best were used to fabricate 5x5 cm solar cells . Those cells are connected to form 75 x 75 cm panels. Photo-oxidation were carried out using different sources as an accelerated method to study the met...

Journal: :Catalysts 2022

The activity of emission control catalysts must be improved in urban mode at low temperatures. One possible way is to tailor the metal-support interaction between platinum group metals (PGMs) and ceria stabilize small clusters or single atoms, optimizing utilization costly PGMs. In this study, a loading Pd (<0.2 wt.%) was dispersed on Pr-rich cerium–zirconium–praseodymium mixed oxides (CZP45...

Journal: :iranian chemical communication 0
aliakbar dehno khalaji department of chemistry, faculty of science, golestan university, gorgan, iran salar hafez goran department of chemistry, faculty of science, golestan university, gorgan, iran sepideh mehrani department of chemistry, faculty of science, golestan university, gorgan, iran karla fejfarova institute of physic of the czech academy of sciences, na slovance 2, 182 21 prague 8, czech republic michal dusek institute of physic of the czech academy of sciences, na slovance 2, 182 21 prague 8, czech republic

in this paper, the structure of a new 16-membered macrocyclic schiff base compound n,n′-(3,3′-dimethoxy-2,2′-(propane-1,3-diyldioxy)dibenzylidene)propane-1,3-diamine, c22h26n2o4 (1), derived from 1,3-propanediamine and 3,3′-dimethoxy-2,2′-(propane-1,3-diyldioxy)dibenzaldehyde has been studied by single crystal x-ray diffraction, dft calculations at b3lyp/6-31g** and ft-ir spectroscopy. the titl...

2008
Alireza Abbasi Iran Sheikhshoaie Abbas Saghaei Niaz Monadi

In the structure of the title compound, [Mo(C(19)H(20)N(2)O(2))O(2)], the Mo atom exhibits oxidation state +VI and is surrounded by two O atoms and the tetra-dentate Schiff base ligand 2,2'-[(2,2-dimethyl-propane-1,3-di-yl)bis-(nitrilo-methyl-idyne)]diphenolate in a distorted octa-hedral configuration. An intra-molecular C-H⋯O hydrogen bond between a methyl-ene group and one O atom of the O=Mo(...

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