Surfactant property of linear alkanes with two pyrrolidone moieties in both termini

1990 ◽  
Vol 67 (11) ◽  
pp. 739-742
Author(s):  
Toshikazu Takata ◽  
Ichiro Atobe ◽  
Naoya Kitamura ◽  
Takeshi Endo
Keyword(s):  
Surfactant Property ◽  
Linear Alkanes

Intermolecular hydrogen transfer in unsaturated hydrocarbons induced by dimeric titanocene

1983 ◽  
Vol 48 (10) ◽  
pp. 2924-2936 ◽  
Author(s):  
Karel Mach ◽  
Lidmila Petrusová ◽  
Helena Antropiusová ◽  
Vladimír Hanuš ◽  
František Tureček ◽  
...  
Keyword(s):  
Hydrogen Transfer ◽  
Titanium Content ◽  
Esr Spectra ◽  
Stable Complex ◽  
Catalytic Complex ◽  
Substitution Reactions ◽  
Unsaturated Hydrocarbons ◽  
Linear Alkanes ◽  
Saturated And Aromatic Hydrocarbons ◽  
Intermolecular Hydrogen Transfer

μ-(η5 : η5-Fulvalene)-di-μ-hydrido-bis(η5-cyclopentadienyltitanium) and μ-(η5 : η5-fulvalene)-μ-chloro-μ-hydrido-bis(cyclopentadienyltitanium) form a thermally stable complex which catalyzes the intermolecular hydrogen transfer in unsaturated hydrocarbons, in addition to isomerizations and cyclizations. Cyclic hydrocarbons disproportionate under catalysis to saturated and aromatic hydrocarbons, while linear olefins yield predominantly linear alkanes and high molecular weight tar. The catalyst enables the hydrocarbon system to approach the thermodynamic equilibrium through a series of substitution reactions between alkyl- and allyltitanocene-like species and olefins and dienes. The catalytic complex was characterized by UV and ESR spectra. About one half of overall titanium content could be converted to mononuclear η3-allyltitanocene-like species, stable up to 400 °C. This exceptional thermal stability is ascribed to a firmly bound allyl containing ligand.

scholarly journals Oxidation of Organic Compounds with Peroxides Catalyzed by Polynuclear Metal Compounds

Catalysts ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 186
Author(s):  
Georgiy B. Shul’pin ◽  
Lidia S. Shul’pina
Keyword(s):  
Catalytic Reactions ◽  
Metal Salts ◽  
Polynuclear Complexes ◽  
Simple Metal ◽  
Metal Compounds ◽  
Mononuclear Complexes ◽  
Iron Copper ◽  
Linear Alkanes ◽  
Oxidation Of Organic Compounds ◽  
Nickel Manganese

The review describes articles that provide data on the synthesis and study of the properties of catalysts for the oxidation of alkanes, olefins, and alcohols. These catalysts are polynuclear complexes of iron, copper, osmium, nickel, manganese, cobalt, vanadium. Such complexes for example are: [Fe2(HPTB)(m-OH)(NO3)2](NO3)2·CH3OH·2H2O, where HPTB-¼N,N,N0,N0-tetrakis(2-benzimidazolylmethyl)-2-hydroxo-1,3-diaminopropane; complex [(PhSiO1,5)6]2[CuO]4[NaO0.5]4[dppmO2]2, where dppm-1,1-bis(diphenylphosphino)methane; (2,3-η-1,4-diphenylbut-2-en-1,4-dione)undecacarbonyl triangulotriosmium; phenylsilsesquioxane [(PhSiO1.5)10(CoO)5(NaOH)]; bi- and tri-nuclear oxidovanadium(V) complexes [{VO(OEt)(EtOH)}2(L2)] and [{VO(OMe)(H2O)}3(L3)]·2H2O (L2 = bis(2-hydroxybenzylidene)terephthalohydrazide and L3 = tris(2-hydroxybenzylidene)benzene-1,3,5-tricarbohydrazide); [Mn2L2O3][PF6]2 (L = 1,4,7-trimethyl-1,4,7-triazacyclononane). For comparison, articles are introduced describing catalysts for the oxidation of alkanes and alcohols with peroxides, which are simple metal salts or mononuclear metal complexes. In many cases, polynuclear complexes exhibit higher activity compared to mononuclear complexes and exhibit increased regioselectivity, for example, in the oxidation of linear alkanes. The review contains a description of some of the mechanisms of catalytic reactions. Additionally presented are articles comparing the rates of oxidation of solvents and substrates under oxidizing conditions for various catalyst structures, which allows researchers to conclude about the nature of the oxidizing species. This review is focused on recent works, as well as review articles and own original studies of the authors.

ChemInform Abstract: EXCESS VOLUMES OF TRIBUTYL PHOSPHITE WITH BRANCHED AND LINEAR ALKANES

1984 ◽  
Vol 15 (46) ◽  
Author(s):  
C. JAMBON ◽  
J. C. MERLIN
Keyword(s):  
Excess Volumes ◽  
Linear Alkanes

Second-order Green's function study of valence band formation of linear alkanes

1992 ◽  
Vol 60 (1) ◽  
pp. 37-56 ◽  
Author(s):  
Michaël Delueze ◽  
Joseph Delhalle ◽  
Barry T. Pickup
Keyword(s):  
Green’S Function ◽  
Valence Band ◽  
Green's Function ◽  
Second Order ◽  
Band Formation ◽  
Function Study ◽  
Linear Alkanes

Additivity Relationships in Carbon-13 Chemical Shift Data for the Linear Alkanes

1963 ◽  
Vol 85 (11) ◽  
pp. 1701-1702 ◽  
Author(s):  
Edward G. Paul ◽  
David M. Grant
Keyword(s):  
Chemical Shift ◽  
Linear Alkanes ◽  
Chemical Shift Data ◽  
Shift Data

Benign by design. New catalysts for an environmentally conscious age

2001 ◽  
Vol 73 (7) ◽  
pp. 1087-1101 ◽  
Author(s):  
John Meurig Thomas ◽  
Robert Raja ◽  
Gopinathan Sankar ◽  
Robert G. Bell ◽  
Dewi W. Lewis
Keyword(s):  
Sustainable Development ◽  
Screening Methods ◽  
Reaction Conditions ◽  
Environmentally Conscious ◽  
Nanoparticle Catalysts ◽  
Fast Screening ◽  
Linear Alkanes ◽  
One Step ◽  
Acid Precursor

There is a pressing need for: (i) cleaner fuels (free of aromatics and of minimal sulfur content) or ones that convert chemical energy directly to electricity, silently and without production of noxious oxides and particulates; (ii) chemical, petrochemical, and pharmaceutical processes that may be conducted in a one-step, solvent-free manner, and that use air as the preferred oxidant; and (iii) industrial processes that minimize consumption of energy, production of waste or the use of corrosive, explosive, volatile and nonbiodegradable materials. All these needs and other desiderata, such as the in situ production and containment of aggressive and hazardous reagents, and the avoidance of use of ecologically harmful elements, may be achieved by designing the appropriate heterogeneous inorganic catalyst, which, ideally should be cheap, readily preparable, and fully characterizable, preferably under in situ reaction conditions. A range of nanoporous and nanoparticle catalysts, designed, synthesized, characterized, and tested by the authors and their colleagues, that meet most of the stringent demands of sustainable development and responsible (clean) technology is described. Specific examples that are highlighted include: (a) the production of adipic acid (precursor of polyamides and urethanes) without the use of concentrated nitric acid or the production of greenhouse gases such as nitrous oxide; (b) the production of caprolactam (precursor of nylon) without the use of oleum and hydroxylamine sulfate; and (c) the terminal oxyfunctionalization of linear alkanes in air. The topic of biocatalysis and sustainable development is also briefly discussed, and a cautionary note is sounded concerning fast screening methods for the discovery of new inorganic catalysts.

scholarly journals Sieving di-branched from mono-branched and linear alkanes using ZIF-8: experimental proof and theoretical explanation

2013 ◽  
Vol 15 (22) ◽  
pp. 8795 ◽  
Author(s):  
Alexandre F. P. Ferreira ◽  
Marjo C. Mittelmeijer-Hazeleger ◽  
Miguel Angelo Granato ◽  
Vanessa F. Duarte Martins ◽  
Alírio E. Rodrigues ◽  
...  
Keyword(s):  
Theoretical Explanation ◽  
Experimental Proof ◽  
Linear Alkanes

Some temperature-sensitive properties of pure linear alkanes and n-ary mixtures

Fuel ◽  
2006 ◽  
Vol 85 (10-11) ◽  
pp. 1323-1328 ◽  
Author(s):  
D PETITJEAN ◽  
J SCHMITT ◽  
J FIORANI ◽  
V LAINE ◽  
M BOUROUKBA ◽  
...  
Keyword(s):  
Temperature Sensitive ◽  
Linear Alkanes

Nonionic Surfactant Property Effects on Thifensulfuron Methyl Performance in Soybeans

2018 ◽  
pp. 525-532
Author(s):  
Jerome M. Green ◽  
Philip A. Brown ◽  
David Berengut ◽  
Michael G. King
Keyword(s):  
Nonionic Surfactant ◽  
Surfactant Property
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