Patent classifications
B01J2231/641
Molecular Catalysts for Selective Hydrogenolysis of Amides
A compound by the name 1,1,1-tris(di(3,5-dimethoxyphenyl)phosphino-methyl)ethane. The compound can be represented by the structure of formula (I):
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The compound is useful as a ligand for ruthenium to form an organometallic complex. The complex is an active catalyst for the hydrogenolysis of amides to form amines and optionally alcohols.
Iron-catalyzed cross-coupling of methanol with secondary or tertiary alcohols to produce formate esters
A process for preparing a variety of secondary and tertiary alkyl formate esters via the coupling of methanol and secondary (or tertiary) alcohols. Iron-based catalysts, supported by pincer ligands, are employed to produce these formate esters in high yields and unprecedentedly high selectivities (>99%). Remarkably, the coupling strategy is also applicable to bulkier tertiary alcohols, which afford corresponding tertiary formate esters in moderately high yields and high selectivities.
NOVEL CARBENE PRECURSOR COMPOUND AND USE THEREOF
Provided are a transition metal compound including a novel carbene compound as a ligand, a preparation method thereof, and an application thereof. The transition metal compound according to the present invention may form a structurally stable complex and also have a HOMO-LUMO energy gap and singlet-triplet transition energy which are significantly low as compared with a conventional transition metal compound. In addition, according to the present invention, the transition metal compound may be synthesized in large quantities by a very simple method, thereby having high commercial utility, and thus, an application using the compound is expected.
SURFACE-MODIFIED CALCIUM CARBONATE AS CARRIER FOR TRANSITION METAL-BASED CATALYSTS
The present invention relates to a catalyst system comprising a transition metal compound on a solid carrier which is a surface-reacted calcium carbonate. The invention further relates to a method for manufacturing said catalyst system and to its use in heterogeneous catalysis.
POLYMER-SUPPORTED TRANSITION CATALYST
A long life catalyst is provided that is conveniently and inexpensively capable of being produced and that is highly active and has inhibited metal leakage. According to aspects of the present invention, a catalyst is provided that includes: a polymer including a plurality of first structural units and a plurality of second structural units; and metal acting as a catalytic center, wherein at least part of the metal is covered with the polymer, each of the plurality of first structural units has a first atom constituting a main chain of the polymer and a first substituent group bonded to the first atom, a second atom included in each of the plurality of second structural units is bonded to the first atom, and the second atom is different from the first atom, or at least one of all substituent groups on the second atom is different from the first substituent group.
Process for the preparation of deuterated ethanol from D2
The invention relates to a process for the preparation of a deuterated ethanol from an acetic acid, an acetate, or an amide by reaction with D.sub.2 in the presence of a transition metal catalyst.
PROCESS FOR PREPARATION OF HYDROFLUOROALKENES BY SELECTIVE CATALYTIC CONSECUTIVE HYDRODEFLUORINATION
The present application provides a hydrodefluorination process for the preparation of hydrofluoroalkenes by catalyzed substitution of one or more F atoms of a C2-C30 fluoroalkene, or a C2-C10 fluoroalkene, with one or more H atoms using a hydride source, such as a silane, and copper catalyst. During this process at least one CF bond in the fluoroakene is converted to a CH bond. The process is useful in the manufacture of hydrofluoroalkenes, such as hydrofluoroalkenes employed as, for example, refrigerants and blowers. Also provided are precatalyst compositions for performing the process, and formulations manufactured from hydrofluoroalkenes produced using the process.
Methods of making cerium oxide polyaniline composite nanospheres and methods of use
Methods of synthesizing cerium oxide and polyaniline nanocomposites, including nanospheres enclosing a hollow core, are specified. Properties of the cerium oxide and polyaniline nanocomposites are described, as well as a method of using the nanocomposites as photocatalysts for the reduction of an aromatic nitro compound using visible light. A method for reusing the nanocomposites as photocatalysts is also discussed.
Polymer-supported transition catalyst
A long life catalyst is provided that is conveniently and inexpensively capable of being produced and that is highly active and has inhibited metal leakage. According to aspects of the present invention, a catalyst is provided that includes: a polymer including a plurality of first structural units and a plurality of second structural units; and metal acting as a catalytic center, wherein at least part of the metal is covered with the polymer, each of the plurality of first structural units has a first atom constituting a main chain of the polymer and a first substituent group bonded to the first atom, a second atom included in each of the plurality of second structural units is bonded to the first atom, and the second atom is different from the first atom, or at least one of all substituent groups on the second atom is different from the first substituent group.
SYSTEMS AND METHODS FOR PROCESSING MIXED PLASTIC WASTE
Systems and methods for processing mixed plastic waste may include one or more reactive extruders to initially dechlorinate and depolymerize the mixed plastic waste and a catalytic reactive distillation column to further process the dechlorinated, depolymerized mixed plastic waste. Depolymerization of the mixed plastic waste through one or more of the disclosed systems and methods produces and enhances the yield of at least a naphtha blend stock.