63625-56-9

Upstream product

• 97-64-3 ethyl 2-hydroxypropionate 
• 187737-37-7 propene 
• 50-70-4 D-sorbitol 
• 52485-53-7 (S)-2-((R)-1-methoxy-2-oxo-ethoxy)-propionaldehyde 
• 50-99-7 glucose 
• 556-52-5 oxiranyl-methanol 
• 116-09-6 hydroxy-2-propanone 
• 96-24-2 3-monochloro-1,2-propanediol 
• 56-81-5 glycerol 
• 75-56-9 methyloxirane 
• 57-50-1 Sucrose 
• 201230-82-2 carbon monoxide 
• 107-18-6 allyl alcohol 
• 140-88-5 ethyl acrylate 

Downstream Products

• 4421-24-3 1-(2,4-dimethyl-[1,3]dioxolan-2-yl)-2-methyl-2-phenyl-propane 
• 108153-16-8 phosphoric acid-(2-hydroxy-phenyl ester)-(2-hydroxy-propyl ester) 
• 4359-32-4 trans-1-(2,4-dimethyl-[1,3]dioxolan-2-yl)-2-(2,6,6-trimethyl-cyclohex-2-enyl)-ethylene 
• 1014-33-1 3-Phenacyliden-3H-1,2-dithiol 
• 6988-22-3 2-(2-hydroxyphenyl)-4-methyl-1,3-dioxolane 
• 4568-68-7 2-chloromethyl-4-methyl-2-phenyl-[1,3]dioxolane 
• 65974-17-6 2-Methyl-hexahydro-1H-1,4-diazepine 
• 100073-30-1 1,2-propanediol ditosylate 
• 25926-37-8 1,8-bis-benzoyloxy-2,5-dimethyl-3,6-dioxa-nonane 
• 6156-15-6 2-methoxy-4-methyl-1,3,2-dioxaphospholane 
• 55983-39-6 2,7-dimethyl-5-phenyl-1,4,6,9-tetraoxa-5λ⁵-phospha-spiro[4.4]nonane 
• 3208-66-0 2-Benzyloxy-4-methyl-<1,3,2>-dioxa-borolan 
• 93336-38-0 2-Cyclohexyloxy-4-methyl-<1.3.2>-dioxa-borolan 
• 6156-16-7 2-butoxy-4-methyl-[1,3,2]dioxaphospholane 

Relevant academic research and scientific papers

Tuning selectivity of Pt/CaCO3 in glycerol hydrogenolysis - A Design of Experiments approach

19 commercially available catalysts have been effectively screened in only 30 experiments for the hydrogenolysis of glycerol using a D-optimal design. Pt/CaCO3 emerged as both an active and selective catalyst and was studied in greater detail using a Central Composite Design. Upon addition of boric acid, the Pt/CaCO3 product selectivity could be changed from 1,2-propanediol towards lactic acid. The formation of 1,2-propanediol and lactic acid could be optimized by considering the Response Surface Model plots and formation pathways.

Ce promoted Cu/γ-Al2O3 catalysts for the enhanced selectivity of 1,2-propanediol from catalytic hydrogenolysis of glucose

Ce promoted Cu/γ-Al2O3 catalysts were prepared with varying amounts of Cu (x = 0–10 wt%) and Ce (y = 0–15 wt%). The prepared catalysts were characterized and tested for the conversion of aqueous glucose (5 wt%) to 1,2-propanediol in a batch reactor. 10%Ce-8%Cu/γ-Al2O3 showed the complete conversion of glucose with 62.7% selectivity of 1,2-propanediol and total glycols (1,2-propanediol, ethylene glycol & 1,2-butanediol) of 81% at milder reaction conditions. Cu facilitated the hydrogenation activity and Ce loading optimize the acid/base sites of Cu/γ-Al2O3 which obtain high selectivity of 1, 2-propanediol. Catalyst reusability is reported.

Well-defined Cp*Co(III)-catalyzed Hydrogenation of Carbonates and Polycarbonates

We herein report the catalytic hydrogenation of carbonates and polycarbonates into their corresponding diols/alcohols using well-defined, air-stable, high-valent cobalt complexes. Several novel Cp*Co(III) complexes bearing N,O-chelation were isolated for the first time and structurally characterized by various spectroscopic techniques including single crystal X-ray crystallography. These novel Co(III) complexes have shown excellent catalytic activity to produce value added diols/alcohols from carbonate and polycarbonates through hydrogenation using molecular hydrogen as sole reductant or iPrOH as transfer hydrogenation source. To demonstrate the developed methodology's practical applicability, we have recycled the bisphenol A monomer from compact disc (CD) through hydrogenation under the established reaction conditions using phosphine-free, earth-abundant, air- and moisture-stable high-valent cobalt catalysts.

Hydrogenolysis of glycerol to 1,3-propanediol over H-ZSM-5-supported iridium and rhenium oxide catalysts

The hydrogenolysis of glycerol to 1,3-propanediol (1,3-PrD) over Ir-ReOx catalysts supported on H-ZSM-5 (denoted as Ir-ReOx/H-ZSM-5) was investigated. The glycerol conversion and 1,3-PrD yield strongly depended on the catalyst composition (Re/Ir) and the amount of metal loading. The analyses of the catalysts using X-ray powder diffraction and transmission electron microscopy revealed that a higher metal dispersion of Ir and a smaller Ir particle were encouraged by the addition of Re to the catalyst. Furthermore, a strong electronic interaction between Ir and Re in the Ir-ReOx/H-ZSM-5 catalyst was observed from X-ray photoelectron spectroscopy measurements. In the study on the effects of operating conditions, increasing the temperature and reaction time resulted in a higher glycerol conversion at the expense of 1,3-PrD selectivity due to over-hydrogenolysis, whereas increasing the pressure had a positive effect on 1,3-PrD selectivity. The highest 1,3-PrD yield observed was achieved at 2.8% with 14.9% glycerol conversion and 19.0% 1,3-PrD selectivity.

Hydrogenolysis of glycerol in an aqueous medium over Pt/WO3/zirconium phosphate catalysts studied by1H NMR spectroscopy

Bifunctional Pt/WO3/zirconium phosphate catalyzes the liquid-phase hydrogenolysis of glycerol in an aqueous medium.1H NMR spectroscopy (solvent suppression pulse program) is employed to monitor this reaction. Propanediols (1,3 + 1,2-PDO) formed as the major product along with propanols (1- and 2-POs) as the minor product. A synergistic enhancement in glycerol conversion and selectivity to 1,3-PDO was observed when both Pt and WO3were present in the catalyst. Avolcano-shapevariation of catalytic activity with W content was observed. A catalyst with 8 wt% W and 1 wt% Pt exhibited the highest selective hydrogenolysis performance (glycerol conversion = 92.3% and total PDOs selectivity = 45.9% and 1,3-PDO selectivity = 20.8% at 200 °C). Dispersed Pt in contact with polytungstate-type WO3species was found to be the active catalytic site.1H NMR spectroscopy is demonstrated as an attractive technique toquantifythe products of a glycerol hydrogenolysis reaction.

Facilitating Pt?WOx Species Interaction for Efficient Glycerol Hydrogenolysis to 1,3-Propanediol

Designing efficient catalysts for glycerol hydrogenolysis to 1,3-propanediol (1,3-PDO), which involves the selective cleavage of the secondary C?O bond, is a challenging task. Current Pt?WOx-based catalysts often provide low atom efficiency of W and Pt toward 1,3-PDO production due to undesired catalyst structures. Herein, we fabricate the highly-dispersed substantially uniform WOx species on inert α-Al2O3 support by simple high-temperature heat-treatment, and the amount of Pt?WOx interface active sites could be adjusted by Pt loading, showing an excellent catalytic performance in glycerol hydrogenolysis at high concentration of glycerol, especially the unprecedented W efficiency (76 g1,3-PDOgW?1 h?1) toward 1,3-PDO. The high catalytic efficiency is attributed to the strong interaction between the isolated WO4 species and platinum, which could in-situ generate the Br?nsted acid sites during the reaction as evidenced by IR analysis with NH3 adsorption.

Highly efficient catalytic transfer hydrogenation of furfural over defect-rich amphoteric ZrO2with abundant surface acid-base sites

Currently, the catalytic transformation and utilization of biomass-derived compounds are of great importance to the alleviation of environmental problems and sustainable development. Among them, furfural alcohol derived from biomass resources has been found to be one of the most prospective biomass platforms for high-value chemicals and biofuels. Herein, high-surface-area ZrO2 with abundant oxygen defects and surface acid-base sites was synthesized and used as a heterogeneous catalyst for the catalytic transfer hydrogenation of furfural into furfural alcohol using alcohol as a hydrogen donor. The as-synthesized ZrO2 exhibited excellent catalytic performance with 98.2% FA conversion and 97.1% FOL selectivity, even comparable with that of a homogeneous Lewis acid catalyst. A series of characterization studies and experimental results revealed that acid sites on the surface of ZrO2 could adsorb and activate the CO bond in furfural and base sites could facilitate the formation of alkoxide species. The synergistic effect of surface acid-base sites affords a harmonious environment for the reaction, which is crucial for catalytic transfer hydrogenation of furfural with high efficiency. Furthermore, the as-prepared ZrO2 catalyst also exhibited a potential application for the efficient catalytic transfer hydrogenation of a series of biomass-derived carbonyl compounds. This journal is

MOF-derived hcp-Co nanoparticles encapsulated in ultrathin graphene for carboxylic acids hydrogenation to alcohols

Highly efficient conversion of carboxylic acids to valuable alcohols is a great challenge for easily corroded non-noble metal catalysts. Here, a series of few-layer graphene encapsulated metastable hexagonal closed-packed (hcp) Co nanoparticles were fabricated by reductive pyrolysis of metal-organic framework precursor. The sample pyrolyzed at 400 °C (hcp-Co@G400) presented outstanding performance and stability for converting a variety of functional carboxylic acids and its turnover frequency was one magnitude higher than that of conventional facc-centered cubic (fcc) Co catalysts. In situ DRIFTS spectroscopy of model reaction acetic acid hydrogenation and DFT calculation results confirm that carboxylic acid initially undergoes dehydroxylation to RCH2CO* followed by consecutive hydrogenation to RCH2CH2OH through RCH2COH*. Acetic acid prefers to vertically adsorb at hcp-Co (0 0 2) facet with a much lower adsorption energy than parallel adsorption at fcc-Co (1 1 1) surface, which plays a key role in decreasing the activation barrier of the rate-determining step of acetic acid dehydroxylation.

Product Control and Insight into Conversion of C6 Aldose Toward C2, C4 and C6 Alditols in One-Pot Retro-Aldol Condensation and Hydrogenation Processes

Alcohols have a wide range of applicability, and their functions vary with the carbon numbers. C6 and C4 alditols are alternative of sweetener, as well as significant pharmaceutical and chemical intermediates, which are mainly obtained through the fermentation of microorganism currently. Similarly, as a bulk chemical, C2 alditol plays a decisive role in chemical synthesis. However, among them, few works have been focused on the chemical production of C4 alditol yet due to its difficult accumulation. In this paper, under a static and semi-flowing procedure, we have achieved the product control during the conversion of C6 aldose toward C6 alditol, C4 alditol and C2 alditol, respectively. About C4 alditol yield of 20 % and C4 plus C6 alditols yield of 60 % are acquired in the one-pot conversion via a cascade retro-aldol condensation and hydrogenation process. Furthermore, in the semi-flowing condition, the yield of ethylene glycol is up to 73 % thanks to its low instantaneous concentration.

GNCC AND/OR PCC AS A CATALYTIC CARRIER FOR METAL SPECIES

The present invention refers to a catalytic system comprising a transition metal compound on a solid carrier, wherein the content of the transition metal compound on the surface of the solid carrier is from 0.1 to 30 wt.-%, based on the dry weight of the solid carrier. Furthermore, the present invention refers to a method for manufacturing the catalytic system, the use of the inventive catalytic system in a chemical reaction, the use of a solid carrier loaded with a transition metal compound as a catalyst and to granules mouldings or extrudates comprising the catalytic system.