An Iron(III)-Monoamidate Complex Catalyst for Selective Hydroxylation of Alkane CH Bonds with Hydrogen Peroxide

2012 ◽  
Vol 124 (14) ◽  
pp. 3504-3508 ◽  
Author(s):  
Yutaka Hitomi ◽  
Kengo Arakawa ◽  
Takuzo Funabiki ◽  
Masahito Kodera
Keyword(s):  
Hydrogen Peroxide ◽  
Complex Catalyst ◽  
Selective Hydroxylation

An Iron(III)-Monoamidate Complex Catalyst for Selective Hydroxylation of Alkane CH Bonds with Hydrogen Peroxide

2012 ◽  
Vol 51 (14) ◽  
pp. 3448-3452 ◽  
Author(s):  
Yutaka Hitomi ◽  
Kengo Arakawa ◽  
Takuzo Funabiki ◽  
Masahito Kodera
Keyword(s):  
Hydrogen Peroxide ◽  
Complex Catalyst ◽  
Selective Hydroxylation

scholarly journals DELIGNIFICATION OF FLAX SHIVE

2017 ◽  
pp. 155-162 ◽  
Author(s):  
Наталья (Natal'ja) Викторовна (Viktorovna) Каретникова (Karetnikova) ◽  
Лариса (Larisa) Валерьевна (Valer'evna) Чендылова (Chendylova) ◽  
Роберт (Robert) Зусьевич (Zus'evich) Пен (Pen)
Keyword(s):  
Hydrogen Peroxide ◽  
Catalyst Concentration ◽  
Sodium Tungstate ◽  
Heat Insulation ◽  
Hot Water ◽  
Pulp Yield ◽  
Complex Catalyst ◽  
Initial Concentration ◽  
Mass Part ◽  
Catalyst Composition

Delignification of the flax shive (wastes of oakum and heat insulation production) was studied. Chemical composition of the work material (mass parts in percents from the bone-dry material): cellulose 30,7, lignin 33,1, pentosans 28,0, extractable by organic solvent 4,3, extractable by hot water 5,4, ash 1,7. The flax shive was delignificated in laboratory condition by means of peracetic acid, hydrogen peroxide and sulfate cooking solution. The conditions of peracetic pulping: initial mass part of the «icy» acetic acid in cooking solution 0,65, perhydrol 0,35, the catalyst concentration (sodium tungstate) 0,03 g-mol/dm3, liquid module 6, temperature 92 °C; pulp yield 46,1% without of undercooked pulp. The conditions of peroxide pulping: initial concentration of hydrogen peroxide 17%, liquid module 6, complex catalyst concentration 0,1 g-mol/dm3 (molar parts of the Na2WO4, Na2MoO4 and H2SO4 in catalyst composition are 0,3 : 0,3 : 0,4 accordingly), temperature 98 °C; pulp yield 45,8% without undercooked pulp. The conditions of sulfate pulping: initial concentration of active alkali 55 g/dm3 (in Na2O unit), degree of sulfidity 18%, liquid module 4, temperature 170 °C; pulp yield 32,3% without undercooked pulp. Samples of the technical cellulose, received by oxidizing methods, excel sulphate cellulose in relation to yield, ability for milling, whiteness and mechanical properties (except for tear). On the set of normalized properties they approach to characteristic of kraft bleached pulp from deciduous woods and can be considered as perspective stringy half-finished for production of the paper sanitary-household and hygienic purpose.

Efficient and selective oxidation of alcohols to carbonyl compounds at room temperature by a ruthenium complex catalyst and hydrogen peroxide

2019 ◽  
Vol 43 (48) ◽  
pp. 19415-19421 ◽  
Author(s):  
Jie-Xiang Wang ◽  
Xian-Tai Zhou ◽  
Qi Han ◽  
Xiao-Xuan Guo ◽  
Xiao-Hui Liu ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Selective Oxidation ◽  
Carbonyl Compounds ◽  
Room Temperature ◽  
Ruthenium Complex ◽  
Secondary Alcohols ◽  
Complex Catalyst ◽  
Efficient System ◽  
Oxidation Of Alcohols

An efficient system comprising a ruthenium complex and hydrogen peroxide was developed for the oxidation of various primary and secondary alcohols at room temperature.

scholarly journals One-step selective hydroxylation of benzene to phenol with hydrogen peroxide catalysed by copper complexes incorporated into mesoporous silica–alumina

2016 ◽  
Vol 7 (4) ◽  
pp. 2856-2863 ◽  
Author(s):  
Mihoko Yamada ◽  
Kenneth D. Karlin ◽  
Shunichi Fukuzumi
Keyword(s):  
Hydrogen Peroxide ◽  
Mesoporous Silica ◽  
Copper Complexes ◽  
Hydroxylation Of Benzene ◽  
Silica Alumina ◽  
One Step ◽  
Selective Hydroxylation

One-step hydroxylation of benzene with hydrogen peroxide to produce phenol catalyzed by a copper(ii) complex.

scholarly journals Specific Enhancement of Catalytic Activity by a Dicopper Core: Selective Hydroxylation of Benzene to Phenol with Hydrogen Peroxide

2017 ◽  
Vol 56 (27) ◽  
pp. 7779-7782 ◽  
Author(s):  
Tomokazu Tsuji ◽  
Antonius Andre Zaoputra ◽  
Yutaka Hitomi ◽  
Kaoru Mieda ◽  
Takashi Ogura ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Catalytic Activity ◽  
Hydroxylation Of Benzene ◽  
Specific Enhancement ◽  
Selective Hydroxylation

Selective hydroxylation of benzene derivatives and alkanes with hydrogen peroxide catalysed by a manganese complex incorporated into mesoporous silica–alumina

2015 ◽  
Vol 51 (22) ◽  
pp. 4662-4665 ◽  
Author(s):  
Yusuke Aratani ◽  
Yusuke Yamada ◽  
Shunichi Fukuzumi
Keyword(s):  
Hydrogen Peroxide ◽  
Mesoporous Silica ◽  
Manganese Complex ◽  
Benzene Derivatives ◽  
Hydroxylation Of Benzene ◽  
Silica Alumina ◽  
Selective Hydroxylation

Selective hydroxylation of benzene to phenol with hydrogen peroxide was efficiently catalysed by a manganese complex incorporated into mesoporous silica–alumina.

scholarly journals Preparation and properties of hydrogen peroxide oxidized starch for industrial use

2020 ◽  
Vol 74 (1) ◽  
pp. 25-36
Author(s):  
Natasa Karic ◽  
Jelena Rusmirovic ◽  
Maja Djolic ◽  
Tihomir Kovacevic ◽  
Ljiljana Pecic ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Industrial Process ◽  
Optimization Procedure ◽  
Morphological Properties ◽  
Complex Catalyst ◽  
Oxidized Starch ◽  
Paper Manufacturing ◽  
Starch Oxidation ◽  
Sunflower Oils ◽  
Industrial Use

Oxidized starch, an additive used in paper manufacturing and products for construction industry, is usually produced using harmful oxidant, such as hypochlorites or periodates. In this study, a simple and efficient eco-friendly laboratory and industrial procedures for starch oxidation were developed. The procedure involves application of small amounts of more environmentally friendly oxidant, hydrogen peroxide, a novel special metal complex catalyst such as copper(II) citrate and copper(II) ricinoleate and biobased plasticizers. Optimization procedure, with respect to the quantity of hydrogen peroxide and temperature in the presence of iron(II) sulphate catalyst, was performed by using the response surface methodology. Compa-rative analysis of the use of the other catalysts that is copper(II) sulphate, copper(II) citrate and copper(II) ricinoleate, indicated copper(II) citrate as the catalyst of choice. Improvement of starch is achieved using three plasticizers: ricinoleic acid (RA), diisopropyl tartarate, as well as epoxidized soybean, linseed and sunflower oils. The effects of hydrogen peroxide and catalyst concentrations, as well as the reaction temperature in the presence of naturally based plasticizers on the physicochemical, thermal and morphological properties of oxidized starch are presented. According to the results obtained in initial experiments, the optimal industrial process is based on the use of copper(II) citrate (0.1 %) as a catalyst and RA (3 %) as a plasticizer.

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