B01J2531/49

Method of Making Metal-Organic Frameworks With a Precursor and Crystallization Aid
20240300983 · 2024-09-12 ·

Provided herein are methods of making a metal-organic framework comprising: combining a pre-ligand with a metal source to provide a plurality of solid reactants; adding a solvent to the plurality of solid reactants to form a reaction mixture, wherein at least 50 wt % of the reaction mixture are the plurality of solid reactants; heating the reaction mixture wherein the pre-ligand is converted to a ligand in the reaction mixture and the ligand reacts with the metal component; and cooling the reaction mixture to produce the metal-organic framework. The present methodologies are performed without dimethylformamide in the reaction mixture. The present methods may further comprise the step of adding a crystallization aid such as zinc oxide to the reaction mixture.

NOVEL LIGAND COMPOUND AND TRANSITION METAL COMPOUND

The present invention relates to a novel ligand compound represented by Formula 1 and a novel transition metal compound represented by Formula 2, and the novel ligand compound and transition metal compound according to the present invention has high comonomer incorporation effect in the preparation of an olefinic polymer having a low density and a high molecular weight, and thus can be usefully used as a catalyst for a polymerization reaction.

Continuity compositions and methods of making and using the same

Continuity compositions are provided as are methods of their preparation. The compositions comprise metal carboxylate salts and fatty amines and find advantageous use in olefin polymerization processes.

PROCESS FOR PREPARING POLYALPHA-OLEFINS

The invention relates to a process for preparing polyalpha-olefins using a catalyst composition comprising a reaction product of an organometallic complex and a co-catalyst, wherein the comprising an organometallic complex is represented by the general formula: LMXn wherein: (i) L is an organic ligand; (ii) M is a transition metal having a valency of p, wherein the metal M is selected from Ti, Zr, and Hf; (iii) X is an anionic ligand to the metal M, and wherein X is selected from the group consisting of halogens, alkyls, aralkyls, alkoxides, amides, and combinations thereof; (iv) n is the number of X groups and equals p-2.

Process for Reducing the Light Oligomer Content of Polypropylene Oils

Disclosed herein are dual catalyst compositions containing an unbridged metallocene compound, a bridged metallocene compound, a chemically-treated solid oxide, and an optional co-catalyst. These catalyst compositions can be used for the oligomerization of propylene to produce an oligomer product. For example, a heavy propylene oligomer can be recovered from the oligomer product, and the heavy propylene oligomer can be characterized by a high flash point and viscosity index, and a low pour point.

Processes for preparing low viscosity lubricants

Disclosed are processes for forming an oligomer product by contacting a feedstock olefin containing trisubstituted olefins with a solid acid catalyst. The oligomer product can be formed at an oligomerization temperature in a range from 20 C. to 40 C. Polyalphaolefins produced from the oligomer product can have reduced viscosities at low temperatures.

PROCESS TO PRODUCE MODIFIED CLAY, SUPPORTED METALLOCENE POLYMERIZATION CATALYST, CATALYST PRODUCED AND USE THEREOF

Catalyst support-activator for olefin polymerization catalysts, and processes for making, the support-activator comprising an intercalated, modified and calcined smectite clay comprising (a) pillars comprising aluminum and optionally: (i) at least one rare earth or lanthanide group metal; or (ii) at least one rare earth or lanthanide group metal and gallium; and (b) at least one ion-exchanged metal ion selected from the group consisting of aluminum, barium, beryllium, calcium, cerium, cesium, copper, chromium, gadolinium, gallium, germanium, hafnium, holmium, iron (II and III), lanthanum, lithium, magnesium, manganese, neodymium, potassium, praseodymium, rubidium, samarium, silver, selenium, sodium, strontium, tellurium, terbium, thallium, thorium, tin, titanium, uranium, ytterbium, yttrium, zinc and zirconium. The pillared clay exhibits a basal d.sub.100 spacing of: (A) 9 to 18 angstroms; or (B) equal to or greater than about 18.5 angstroms. Use of the modified clays, with metallocene catalyst precursor components, provides active olefin polymerization catalysts, preferably in the substantial absence of aluminoxanes or boron-containing compounds.

Process for the preparation of branched polyolefins for lubricant applications

Processes to prepare branched polyolefins for lubricant applications comprise combining at least one olefin and a coordination-insertion catalyst under conditions such that at least one oligomer product is formed. Low molecular weight by-products are fractionated out and the oligomer product is converted to a saturated hydrocarbon via hydrogenation.

Process for reducing the light oligomer content of polypropylene oils

Disclosed herein are dual catalyst compositions containing an unbridged metallocene compound, a bridged metallocene compound, a chemically-treated solid oxide, and an optional co-catalyst. These catalyst compositions can be used for the oligomerization of propylene to produce an oligomer product. For example, a heavy propylene oligomer can be recovered from the oligomer product, and the heavy propylene oligomer can be characterized by a high flash point and viscosity index, and a low pour point.

Methods for preparing catalyst systems with increased productivity

Methods for producing catalyst systems with increased productivity are disclosed. The methods may comprise providing a catalyst composition comprising a solvent and a single-site catalyst component, heating an inert gas to a temperature in a range of from about 100? C. to about 150? C., and spray drying the catalyst composition in the presence of the inert gas to form a spray-dried catalyst system. Additionally, the methods may comprise providing a catalyst composition comprising a solvent, an activator, a filler material, a metallocene catalyst, and a Group 15-containing catalyst; heating an inert gas to a temperature in a range of from about 100? C. to about 150? C.; and spray drying the catalyst composition in the presence of the inert gas to form a spray-dried catalyst system.