نتایج جستجو برای: propane

تعداد نتایج: 3880  

2012
Na-Bo Sun Guo-Wu Rao Jian-Bo Chu

In the title mol-ecule, C(13)H(16)ClF(3)N(2)O(4)S, the imidazolidine ring is approximately planar, the largest deviation from this plane being 0.025 (3) Å. The cyclo-propane ring forms a dihedral angle of 64.1 (2)° with the imidazolidine ring. In the crystal, C-H⋯O hydrogen bonds are observed.

2013
Hui Mao Ya-Wei Tu Shi-Kun Li Xiao-Juan Wang Peng-Peng Wang

The asymmetric unit of the title compound, C(12)H(16)O(2), contains two independent mol-ecules in which the dihedral angles between the benzene and cyclo-propane rings are 75.9 (3) and 76.3 (3)°. In the crystal, the mol-ecules are connected by O-H⋯O hydrogen bonds into a three dimensional supra-molecular structure.

In this paper, nickel oxide (NiO) nanoparticles have been prepared by solid state thermal decomposition of an acyclic nickel(II) complex (1,2-bis(2-formyl-3-methoxyphenyl)propane)nickel(II) chloride, [NiL]Cl2, in an electrical furnace at optimal temperature, 450 ºC for 3.5 h. The nickel(II) complex is obtained via solid state synthesis using nickel(II) chloride and tetradentate O4 acyclic ligan...

2009
Kamal Aziz Ketuly A. Hamid A. Hadi Seik Weng Ng

In the title steroid derivative, C(23)H(37)IO, the fused cyclo-propane unit that comprises part of the A ring has a β-configuration, and the associated cyclo-pentane ring has an envelope conformation.

Journal: :Optics letters 1995
R A Cheville D Grischkowsky

We present what is to our knowledge the first comprehensive far-infrared absorption measurement of flames. These measurements, covering the region of 7-88 wave numbers (0.2-2.65 THz) are only now made possible by the technique of terahertz time-domain spectroscopy. We observe a large number of absorption lines-including those of water, CH, and NH(3)-in a stationary, premixed, propane-air flame....

Fluidized bed was employed to investigate propane steam reforming over Ni-K/CeO2-Al2O3 catalyst. The catalyst was characterized by XRD, SEM, TG/DTA, and N2 adsorption-desorption tests. Effects of promoters, space velocity, temperature, and steam/propane (S/C) ratio on propane conversion, H2 yield, H2/CO ratio, and stability were studied and discussed. The experiments were carried out under cond...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1389

oxidative addition reactions of 1,4-diiodo-butane and 1,3-diiodo-propane with [ptme2(ph2phen)]; in which ph2phen=4,7-diphenyl-1,10-phenanthroline, were studied in different solvents such as acetone and benzene.oxidative addition reaction of [pt me2(ph2phen)] with i(ch2)4i and i(ch2)3i produced the [pt me2i(ch2)4(ph2phen)i] (1a) and [pt me2i(ch2)3(ph2phen)i] (1b).all the platinum (iv) products w...

Journal: :ASME open journal of engineering 2023

Abstract Propane (C3H8) and hydrogen (H2) are regarded as alternative fuels that favorable to the environment. Hydrogen gas's low energy density, storage, transportation main issues with using it an fuel. Addition of gas in combustion propane will also improve flame stability, broaden lean flammability limits, reduces pollutant emissions. Thus, utilizing mixtures fuel is a good choice. Laminar ...

Journal: :Catalysis Letters 2021

Abstract CeO 2 , V O 5 and CeVO 4 were synthesised as bulk oxides, or deposited over activated carbon, characterized by XRD, HRTEM, CO -TPO, C 3 H 8 -TPR, DRIFTS Raman techniques tested in propane oxidative dehydrogenation using . Complete oxidation of to is favoured lattice oxygen The temperature programmed experiments show the ~ nm AC supported crystallites become more susceptible reduction p...

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