Cyclohexanol
Mostrando 1-12 de 36 artigos, teses e dissertações.
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1. OXIDATION OF CYCLOHEXANOL ON PHOSPHOTUNGSTIC ACID ANION INTERCALATED LAYERED DOUBLE HYDROXIDES WITH AQUEOUS H2O2 AS OXIDANT
The layered double hydroxides (LDH) of Mg2AlNi and Mg3Al pillared by Keggin-type phosphotungstic acid anion (POM), i.e. Mg2AlNi-POM LDH and Mg3Al-POM LDH were synthesized by an ion-exchange method. The synthesized POM intercalated LDH compounds were characterized using various techniques such as FTIR, XRD, TGA and BET. The observed results show that the obta
Quím. Nova. Publicado em: 2018-01
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2. ESTUDO DA GLICOSILAÇÃO DO CICLO-HEXANOL COM DIFERENTES DERIVADOS DE D-GLICOSAMINA E PROMOTORES DE GLICOSILAÇÃO PELO MÉTODO DE KOENIGS-KNORR
We report herein a study on the glycosylation of cyclohexanol with four D-glucosamine-based peracetylated glycosyl chlorides bearing different substituents at C-2 and three glycosylation promoters, silver carbonate, silver triflate and mercury II chloride/mercury II oxide, by the Koenigs-Knorr method. Under the conditions studied, glycosylation was successfu
Quím. Nova. Publicado em: 2016-01
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3. Development of low-cost equipment to instrumentalize the ASTM D 1209-00 method / Desenvolvimento de equipamento de baixo custo instrumentalizar o metodo ASTM D 1209-00
The ASTM D1209-00 method describes the procedure for the visual measurement of the color of essentially light colored liquids, which involves the visual comparation between the color of the samples with the color of Pt-Co standards solutions, with concentration from 1 to 500 unities of Pt-Co, the ASTM D 1209-00 scale (solutions obtained by mixing potassium c
Publicado em: 2008
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4. Influence of the preparation condition of Pd/TiO2 catalysts for the pentachlorophenol hydrodechlorination / Influencia das condições de preparação sobre o desempenho de catalisadores Pd/TiO2 para a hidrodescloração do pentaclorofenol
Organic-chlorine compounds are chemicals which main characteristic is high toxicity and persistence, both in live organisms and in the environment. Such is the case of pentachlorophenol, used as herbicide and pesticide for harvest protection and as biocide for treating woods and leathers. A very promising treatment method is the catalytic hydrodechlorination
Publicado em: 2007
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5. Polimetalates porphyrins with ruthenium phosphinics complex to application in homogeny catalyze, Non Linear Optic and Langmuir-Blodgett film preparation / Porfirinas polimetaladas com complexos periféricos de rutênio com aplicações em catálise homogênea, óptica não linear e montagem de filmes de Langmuir-Blodgett
A novel metaloporphyrin with ruthenium complexes, {H2-TPyP[RuCl(dppb)(Xbipy)] 4}(PF6)4 and {M-TPyP[RuCl(dppb)(X-bipy)]4}(PF6)4, (where M = Mn(III), Co(II) and Zn(II), X = Me- MeO- and Cl-) has been synthesized and structurally characterized by 31P{1H} magnetic resonance, UV-Vis and IR spectroscopy, cyclic voltammetry and CHN. The catalytic activity of {Mn-TP
Publicado em: 2007
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6. Influencia das condições de preparação sobre o desempenho de catalisadores Pd/TiO2 para a hidrodescloração do pentaclorofenol / Influence of the preparation condition of Pd/TiO2 catalysts for the pentachlorophenol hydrodechlorination
Os compostos organoclorados são substâncias químicas que têm como característica uma elevada toxicidade e persistência, tanto no meio ambiente quanto nos organismos vivos. Tal é o caso do pentaclorofenol, usado como herbicida e pesticida na proteção de lavouras e como biocida no tratamento de madeiras e couros. Um método de tratamento bastante prom
Publicado em: 2007
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7. Liquid-liquid equilibria of propionic acid - water - solvent (n-hexane, cyclohexane, cyclohexanol and cyclohexyl acetate) ternaries at 298.15 K
The experimental liquid-liquid equilibrium data on propionic acid-water-solvent ternary mixtures at a temperature of 298.15 K are presented. The solvents are n-hexane, cyclohexane, cyclohexanol and cyclohexyl acetate. The distribution coefficients and separation factors are reported. The tie line data are correlated using the methods of Othmer-Tobias and Han
Brazilian Journal of Chemical Engineering. Publicado em: 2004-12
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8. "Oxidação do cicloexeno a cicloexanona pelo Processo Wacker"
Cyclohexanone is an important industrial intermediate which is normally obtained together with cyclohexanol by cyclohexane oxidation using homogeneous cobalt catalysts. The conversion is limited to 4% in order to keep the selectivity high. In this work, we studied the synthesis of cyclohexanone by Wacker oxidation of cyclohexene using the chloride ion- free
Publicado em: 2004
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9. Tratamento de residuos organoclorados toxicos : avaliação das condições experimentais para a hidrodescloração do pentaclorofenol com catalisadores de paladio
Concerns with environmental pollution have changed most intensively since Industrial Revolution. At the beginning, environmental pollution was faced as a simple effect of the progress of humanity, but lately, it has been considered a terrible global problem. Nowadays, severe legislation for environmental pollution control has given rise to a great variety of
Publicado em: 2004
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10. LIQUID-LIQUID EQUILIBRIA OF THE ACETIC ACID-WATER-MIXED SOLVENT (CYCLOHEXYL ACETATE-CYCLOHEXANOL) SYSTEM
Mixtures of cyclohexyl acetate and cyclohexanol were used as a mixed solvent to study liquid-liquid equilibria (LLE) of the acetic acid-water-cyclohexanol-cyclohexyl acetate quaternary system. The solubility diagram and tie-line data were determined at 298±0.20 K and atmospheric pressure, using various compositions of mixed solvent. Reliability of the data
Brazilian Journal of Chemical Engineering. Publicado em: 2002-03
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11. Tecnicas estatisticas multivariadas para o monitoramento de processos industriais continuos
In the industry of chemical processes, a lot of variabIes are manipulated and monitored at the same time. In these cases, it start to be of extreme importance the stages of data treatment and the deveIopment of models for representation of the processo One of the most important goals are detection and identification of faults in the processo Using multivaria
Publicado em: 2002
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12. Oxidação seletiva de cicloexano catalisada por zeolita Y contendo terras raras
Catalysts of the type LnY (Ln = Ce, Me, Nd, Sm and Yb) were synthesized starting from the respective rare earth chlorides and of zeolites Y (Si: AI = 2,6 , 12,5, 28, 60 and 100) by means of solid state exchange (T = 800 K, p = 13 kPa and t = 6 h). Such catalysts were characterized by X-ray difraction, infrared espectroscopy, AI and Si nuclear magnetic resona
Publicado em: 1999