Direct conversion of bio-ethanol to propylene in high yield over the composite of In2O3 and zeolite beta

2017 ◽  
Vol 19 (23) ◽  
pp. 5582-5590 ◽  
Author(s):  
Fangqi Xue ◽  
Changxi Miao ◽  
Yinghong Yue ◽  
Weiming Hua ◽  
Zi Gao
Keyword(s):  
Direct Conversion ◽  
Zeolite Beta ◽  
High Yield ◽  
Propylene Yield

The superior propylene yield of the In2O3-beta composite (ca. 50%) for the conversion of ethanol to propylene compared to In2O3 (ca. 32%) is due to the fact that zeolite beta in the composite enhances the conversion of the intermediate of acetone to propylene via an additional pathway.

RuO2–Ru/Hβ zeolite catalyst for high-yield direct conversion of xylose to tetrahydrofurfuryl alcohol

2021 ◽  
Vol 291 ◽  
pp. 120120
Author(s):  
Rizki Insyani ◽  
Amsalia Florence Barus ◽  
Ricky Gunawan ◽  
Jaeyong Park ◽  
Gladys Tiffany Jaya ◽  
...  
Keyword(s):  
Zeolite Catalyst ◽  
Direct Conversion ◽  
High Yield ◽  
Hβ Zeolite

Direct conversion of cellulose to high-yield methyl lactate over Ga-doped Zn/H-nanozeolite Y catalysts in supercritical methanol

2017 ◽  
Vol 19 (8) ◽  
pp. 1969-1982 ◽  
Author(s):  
Deepak Verma ◽  
Rizki Insyani ◽  
Young-Woong Suh ◽  
Seung Min Kim ◽  
Seok Ki Kim ◽  
...  
Keyword(s):  
Lignocellulosic Biomass ◽  
Value Added ◽  
Direct Conversion ◽  
High Yield ◽  
Supercritical Methanol ◽  
Methyl Lactate ◽  
High Yields

For realizing sustainable bio-based refineries, it is crucial to obtain high yields of value-added chemicalsviadirect conversion of cellulose and lignocellulosic biomass.

Unraveling the role of cobalt in the direct conversion of CO2 to high-yield liquid fuels and lube base oil

2021 ◽  
pp. 121041
Author(s):  
Heuntae Jo ◽  
Muhammad Kashif Khan ◽  
Muhammad Irshad ◽  
Malik Waqar Arshad ◽  
Seok Ki Kim ◽  
...  
Keyword(s):  
Direct Conversion ◽  
Liquid Fuels ◽  
High Yield ◽  
Base Oil

scholarly journals Direct conversion of CO2 to aromatics with high yield via a modified Fischer-Tropsch synthesis pathway

2020 ◽  
Vol 269 ◽  
pp. 118792 ◽  
Author(s):  
Yang Wang ◽  
Shun Kazumi ◽  
Weizhe Gao ◽  
Xinhua Gao ◽  
Hangjie Li ◽  
...  
Keyword(s):  
Direct Conversion ◽  
Tropsch Synthesis ◽  
High Yield ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis

scholarly journals Nucleic Acid Related Compounds. 8. Direct Conversion of 2′-Deoxyinosine to 6-Chloropurine 2′-Deoxyriboside and Selected 6-Substituted Deoxynucleosides and Their Evaluation As Substrates of Adenosine Deaminase

1973 ◽  
Vol 51 (19) ◽  
pp. 3161-3169 ◽  
Author(s):  
Morris J. Robins ◽  
Gerald L. Basom
Keyword(s):  
Adenosine Deaminase ◽  
Methylene Chloride ◽  
Potassium Fluoride ◽  
Direct Conversion ◽  
Chloride Complex ◽  
High Yield ◽  
Mass Spectral ◽  
Quaternary Ammonium Chloride ◽  
Related Compounds

Trifluoroacetylation of 2′-deoxyinosine (2), obtained by enzymatic deamination of 2′-deoxyadenosine (1), gave the 3′,5′-bis-O-trifluoroacetate (3). Reaction of the electronegatively substituted deoxynucleoside, 3, with DMF-thionyl chloride complex in refluxing methylene chloride gave a high yield of 6-chloropurine 2′-deoxyriboside (4) after deblocking.Displacement of chloride of 4 by hydrosulfide to give 6-mercaptopurine 2′-deoxyriboside (5) followed by sulfur alkylation with p-nitrobenzyl bromide gave 6-S-(p-nitrobenzyl) thiopurine 2′-deoxyriboside (6) which was alternatively prepared by displacement of chloride from 4 by p-nitrobenzyl mercaptide, generated in situ from the isothiouronium salt. Methyl mercaptide reaction with 4 gave 6-methylthiopurine 2′-deoxyriboside (7). Treatment of 4 with trimethylamine gave the corresponding quaternary ammonium chloride (8) which was allowed to react with potassium fluoride to give 6-fluoropurine 2′-deoxyriboside (9). Respective amine displacements on 4 gave 6-benzylaminopurine 2'-deoxyriboside (10), and 6-hydroxylaminopurine 2′-deoxyriboside (11). Reaction of 4 with liquid ammonia completed the first reported transformation of 2′-deoxyinosine (2) to 2′-deoxyadenosine (1).Biological rationale for the synthesis of these 2′-deoxynucleosides and their evaluation as substrates of adenosine deaminase are discussed. Major mass spectral fragmentations are tabulated.

Direct conversion of biomass derived l-rhamnose to 5-methylfurfural in water in high yield

2020 ◽  
Vol 22 (18) ◽  
pp. 5984-5988 ◽  
Author(s):  
Yunchao Feng ◽  
Zheng Li ◽  
Sishi Long ◽  
Yong Sun ◽  
Xing Tang ◽  
...  
Keyword(s):  
Direct Conversion ◽  
Raw Material ◽  
High Yield

We report here that l-rhamnose, a less popular renewable and commercially available carbohydrate, can be used as a potential raw material to generate 5-methylfurfural (MF).

scholarly journals Catalytic Transfer of Fructose to 5-Hydroxymethylfurfural over Bimetal Oxide Catalysts

2019 ◽  
Vol 2019 ◽  
pp. 1-6
Author(s):  
Qiuyun Zhang ◽  
Xiaofang Liu ◽  
Tingting Yang ◽  
Quanlin Pu ◽  
Caiyan Yue ◽  
...  
Keyword(s):  
High Surface ◽  
High Surface Area ◽  
Nitrogen Adsorption ◽  
Direct Conversion ◽  
Significant Loss ◽  
Desorption Isotherm ◽  
High Yield ◽  
Reaction Conditions ◽  
Strong Acidity ◽  
Adsorption Desorption

Direct conversion of fructose into 5-hydroxymethylfurfural (HMF) is achieved by using modified aluminum-molybdenum mixed oxide (S-AlMo) as solid acid catalysts. The synthesized catalyst was characterized by powder XRD, nitrogen adsorption-desorption isotherm, NH3-TPD, and SEM. As a result, the presence of strong acidity, mesostructures, and high surface area in the S-AlMo catalyst was confirmed by nitrogen adsorption-desorption isotherm and NH3-TPD studies. A study by optimizing the reaction conditions such as catalyst dosage, reaction temperature, and time has been performed. Under the optimal reaction conditions, HMF was obtained in a high yield of 49.8% by the dehydration of fructose. Moreover, the generality of the catalyst is also demonstrated by glucose and sucrose with moderate yields to HMF (24.9% from glucose; 27.6% from sucrose) again under mild conditions. After the reaction, the S-AlMo catalyst can be easily recovered and reused four times without significant loss of its catalytic activity.

Autocatalytic Photo-Oxidation Process of C3-C4 Fraction to Methanol

2013 ◽  
Vol 660 ◽  
pp. 51-56 ◽  
Author(s):  
Mariya G. Loriya ◽  
Ayodeji A. Ijagbuji ◽  
Alexei B. Tselishtev ◽  
Ivan I. Zakharov
Keyword(s):  
Crude Oil ◽  
Oxidation Process ◽  
Direct Conversion ◽  
High Yield ◽  
Processing Conditions ◽  
High Activation ◽  
Methanol Production ◽  
One Step ◽  
Crude Oil Distillation ◽  
High Degree

The direct conversion of propane and butane fraction (existing as mixtures rather than separate products) to methanol as well as the reaction mechanism under visible light source (λ=420 nm) and the catalytic action of •NO2 have been evaluated. The purpose of this work is to explore novel pathways for the production of methanol by suggesting a simplified model and result-oriented scheme to avoid the drawbacks associated with methane activation (incredibly high activation energy of about 440 kJ/mol even under mild processing conditions) in the course of its transformation to methanol which is characterized by high yield and selectivity. It is important to consider propane and butane fraction (recovered from primary crude oil distillation and by cracking of heavy molecules) as a possible feedstock for methanol production exhibiting a sufficiently high degree of conversion per pass. Thereby, a relatively simple and economical method for methanol production from refined crude oil composed of propane and butane (a one step co-processing) have been tendered.

Sign in / Sign up

Export Citation Format

Share Document