نتایج جستجو برای: al c3h7cl c2h4 catalyst
تعداد نتایج: 485700 فیلتر نتایج به سال:
This study employed radio-frequency (RF) plasma for decomposing benzene (C6H6) gas, and examined both gaseous products and solid depositions after reaction. The reactants and products were analyzed mainly by using both an on-line Fourier transform infrared (FT-IR) spectrometer and a gas chromatography. The analyses for solid deposition included electron spectroscopy for chemical analysis (ESCA)...
Using cryochemical manipulation of Ni atom reactions with ethylene-argon mixtures at 15-25 K and from examination of the vibrational and electronic spectra, we have identified N i ~ ( c 2 H 4 ) ~ (where rn = 1,2) in the presence of Ni(CZH4), (where m = I , 2, 3). These results suggest strongly that the ethylene moiety is complexed to the chemical site in a r-complexed manner, probably i n assoc...
C2H2, C2H4, and C2H6 are important oil-dissolved gases in power transformers. Detection of the composition and content of oil-dissolved gases in transformers is very significant in the diagnosis and assessment of the state of transformer operations. The commonly used oil-gas analysis methods have many disadvantages, so this paper proposes a Ni-doped carbon nanotube (Ni-CNT) gas sensor to effect...
SiO2-supported silyl chromate catalyst is an important industrial catalyst for production of high grade HDPE pipe materials. The control of the short chain branch (SCB) distribution using this catalyst system is still a great challenge. In this work, ethylene and 1-hexene copolymers were synthesized using SiO2-supported silyl chromate catalyst combined with triisobutylaluminium (TIBA), triethyl...
Molecular Trapping In article number 2203745, Jingui Duan, Susumu Kitagawa, and co-workers report a trap-and-flow channel crystal, where the flow provides an effective shape- size-dependent sieving path for linear acetylene carbon dioxide, while possesses customized space of efficient molecular trapping, yielding record productivity poly-grade C2H4 from C2H2/CO2/C2H4 mixtures.
The substitution chemistry of olefin complexes (silox)3M(ole) (silox = (t)Bu3SiO; M = Nb (1-ole), Ta (2-ole); ole = C2H4 (as 13C2H4 or C2D4), C2H3Me, C2H3Et, cis-2-C4H8, iso-C4H8, C2H3Ph, cC5H8, cC6H10, cC7H10 (norbornene)) was investigated. For 1-ole, substitution was dissociative (deltaG(double dagger)(diss)), and in combination with calculated olefin binding free energies (deltaG(o)(bind)), ...
abstract in first part of this project, the use of a new and biguanid-like catalyst supported on silica as a recyclable catalyst provides a new route for the synthesis of a variety of arylalkylidene rhodanine derivatives through knoevenagle reaction in at present of solvent at room temperature. rhodanine derivatives and especially arylalkylidene rhodanines have proven to be attractive compound...
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