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Group 8 catalysts

MoreUo GR, Cimdari TR, Gunnoe TB. DFT study of group 8 catalysts for the hydro-phenylation of ethylene influence of ancillary ligands and metal identity. J Organomet Chem. 2012 697 15-22. [Pg.252]

Jacobsen subsequently reported a practical and efficient method for promoting the highly enantioselective addition of TMSN3 to meso-epoxides (Scheme 7.3) [4]. The chiral (salen)Cl-Cl catalyst 2 is available commercially and is bench-stable. Other practical advantages of the system include the mild reaction conditions, tolerance of some Lewis basic functional groups, catalyst recyclability (up to 10 times at 1 mol% with no loss in activity or enantioselectivity), and amenability to use under solvent-free conditions. Song later demonstrated that the reaction could be performed in room temperature ionic liquids, such as l-butyl-3-methylimidazo-lium salts. Extraction of the product mixture with hexane allowed catalyst recycling and product isolation without recourse to distillation (Scheme 7.4) [5]. [Pg.230]

Group Catalyst (wt. % Au) Temp. K NO conv. % CjHg conv. % C.F. Au particle size, nm Au plastnon peak width ... [Pg.703]

Group Catalyst pH Temp. Time of addition of Vigorous... [Pg.709]

Corey and colleagues studied the chiral induction of various analogs of 406 in which the phenyl groups on the tertiary carbinol unit were replaced by other aromatic groups. The use of 3,5-xylyl groups (catalyst 412) gave the best results. Cycloadduct 413, for example, was obtained with 95% ee in the presence of this catalyst255. [Pg.423]

This paper reports on the oxygen tolerance of a series of catalyst systems, by subjecting two different substrates to oxidation (i) methanol as an easily oxidizable model compound and (ii) HMF, a versatile intermediate, as a more difficult substrate with the advantage of the presence of two different oxidizable groups. Catalyst variables included the metal as well as the support. [Pg.386]

Aromatic compounds are reduced over the six platinum metal group catalysts at widely different rates, as expected, but additionally the products of reduction frequently vary with the metal used. Many of these results may be correlated in terms of two parameters not obviously connected to aromatic properties the relative tendencies of these catalysts to promote double bond migration in olefins and to promote hydro-genolysis of vinylic and allylic functions. [Pg.158]

An important general method for preparing indoles involves the catalytic elimination of ammonia from phenylhydrazones of carbonyl compounds having an a-roethylene group. Catalysts include zinc chloride, cuprous chloride, boron fluoride etherate, dilute sulfuric acid, alcoholic hydrochloric acid, and glacial acetic acid. ... [Pg.427]

Group Catalyst iRel COOH End-groups (milliequiv g ) Polymer colour... [Pg.510]

Lyubovsky, M., Smith, L.L., Castaldi, M., Karim, H., Nentwick, B., Etemad, S., LaPierre, R., and Pfefferle, W.C. Catalytic combustion over platinum group catalysts Fuel-lean versus fuel-rich operation. Catalysis Today, 2003, 83, 71. [Pg.353]

The nanogold catalysts are also extremely promising as, in contrast to the Pt metal group catalysts, they are intrinsically more active for CO oxidation than for H2 oxidation, and also the catalytic activity of Au is enhanced by moisture and almost insensitive to CO2 [35,38,52,183-187,189,191,195], Haruta and co-workers observed more than 95% conversion for CO (1% CO, 1% O2, balance H2) in a temperature range between 323 and 353 K on gold supported on manganese oxides [184], This clearly is very promising, as the normal operation temperature of a PEM cell is about 353 K,... [Pg.410]

Recent work with main group catalysts has concentrated on the use of Oxone (potassium peroxymonosulfate) as co-oxidant with organic ketone derivatives. Shing et al. have described an arabinose ketone catalyst containing a tuneable butanediacetal functionality (Fig. 1.2e) which can be used for asymmetric epoxidation with up to 90% ee [198]. The group of Shi reports on a range of ketones bearing... [Pg.23]

Catalyst group Catalyst composition S.A., m2/g Phase composition Olefins sel. )-% Olefins product. g/gCat. h... [Pg.317]


See other pages where Group 8 catalysts is mentioned: [Pg.319]    [Pg.383]    [Pg.47]    [Pg.706]    [Pg.68]    [Pg.23]    [Pg.556]    [Pg.265]    [Pg.519]    [Pg.98]    [Pg.151]    [Pg.11]    [Pg.214]    [Pg.46]    [Pg.291]    [Pg.211]    [Pg.860]    [Pg.1517]    [Pg.615]    [Pg.208]    [Pg.240]    [Pg.198]    [Pg.470]    [Pg.257]    [Pg.98]    [Pg.5598]    [Pg.125]    [Pg.147]    [Pg.1272]    [Pg.145]    [Pg.959]    [Pg.41]    [Pg.18]    [Pg.338]    [Pg.495]   
See also in sourсe #XX -- [ Pg.179 ]




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Acid catalysts increase the reactivity of a carbonyl group

Adams catalyst carbonyl group

Alkynes group 4 metal catalysts

Alumina-silica catalyst surface group density

Amine-phenolate group 4 type catalysts

By Group 4 and 5 Metal Catalysts

By Other Group 8-10 Metal Catalysts

Catalyst activity and functional group

Catalyst activity and functional group tolerance

Catalyst functional group tolerance

Catalyst precursors group 13 compounds

Catalyst-controlled directing groups

Catalyst-directing group

Catalysts Prepared from Metal Carbonyls of Group 8 Iron, Ruthenium and Osmium

Catalysts group 13 compounds

Cationic group 4 metal hydroamination catalysts

Copper catalysts atom/group-transfer reactions

Early-Late Heterobimetallic Complexes of Group 4 Metals as Potential Catalysts

Friedel-Crafts catalyst groups

Group 3 and rare earth metal catalysts

Group 4 Metal Based Catalysts

Group 4 metal benzyl catalysts

Group 4 metal benzyl catalysts mechanism

Group 4 metallocene catalysts

Group IV Metallocene Catalysts

Group VIII metals as catalysts

Group VIII metals catalysts

Groups VII, VIII and IB as Catalysts

Groups of Catalysts

Hydroxy group effect catalysts

Hydroxyl group reactions catalysts

Imidazole groups, polymeric catalysts

Main group catalysts

Main group metal catalysts

Metal catalysts, Group

Metal complex catalysts main group elements

Metal complex catalysts main group metals

Metallocene catalysts bridging groups

Methylene groups copper catalysts

Neutral Group 3 Metallocene Complexes as Catalysts of Polymerization

Organochromium catalysts group

Organometallic Fluorides of Group-4 Metals as Efficient Catalysts for Polymerization

Phase-transfer catalysts, functional group

Phase-transfer catalysts, functional group tolerance

Platinum-group metals catalysts

Principal Groups of Lanthanide-Based Catalysts

Propagation group 4 metallocene catalysts

Rapid End Group Exchange in the Presence of Anionic Catalysts

Rhodium-ruthenium catalysts groups

Ruthenium catalysts atom/group transfer reactions

Sulfur groups catalyst

Thiourea catalyst functional groups

Transition metal catalysts atom/group-transfer reactions

Trifluoromethyl group copper catalysts

Trifluoromethyl group palladium catalysts

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