摘要:
Provided are crystalline forms of nicotinamide riboside, including a Form I of nicotinamide riboside chloride according to formula I
Also disclosed are pharmaceutical compositions comprising the crystalline Form I of nicotinamide riboside chloride, and methods of producing such pharmaceutical compositions. In other aspects, the present disclosure pertains to methods comprising administering to a subject the crystalline Form I of nicotinamide riboside chloride. The present disclosure also provides methods of preparing the crystalline Form I of nicotinamide riboside chloride. Also provided are a crystalline Form I of nicotinamide riboside chloride that is prepared according to any of the disclosed methods for preparing the crystalline Form I.
摘要:
A catalyst composition for the polymerization of propylene is provided. The catalyst composition includes one or more Ziegler-Natta procatalyst compositions having one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors, one or more aluminum containing cocatalysts and a selectivity control agent (SCA). The SCA is a mixture of an activity limiting agent and a silane composition. The catalyst composition has a molar ratio of aluminum to total SCA from 0.5:1 to 4:1. This aluminum/SCA ratio improves polymerization productivity and the polymer production rate. The catalyst composition is self-extinguishing.
摘要:
Disclosed in certain embodiments is an electron donor for a polyolefin polymerization catalyst. In some embodiments, a solid catalyst component includes a metal component and the electron donor that form a catalyst on a support.
摘要:
Disclosed are spherical magnesium-based catalyst supports and methods of using the same in a Ziegler-Natta catalyst system for the polymerization of an olefin. The spherical magnesium-based catalyst supports are made by reacting a magnesium halide, a haloalkylepoxide, and a phosphate acid ester in an organic solvent that does not have to contain substantial amounts of toluene.
摘要:
A method for synthesizing small crystals of silicoaluminophosphate-34 (SAPO-34) molecular sieves with high structural purity. The method includes first forming a slurry comprising monoisopropanolamine. Then, the slurry is aged to form an aged slurry. Finally, crystallization of silicoaluminophosphate molecular sieves comprising the SAPO-34 molecular sieves is induced from the aged slurry.
摘要:
A method for deoxygenating renewable oils comprised of natural oils or greases or derivatives thereof containing triglycerides or free fatty acids includes the steps of: providing a catalyst comprising a support predominantly comprised of alumina with metal compounds provided on the support based on Mo and at least one selected from the group consisting of Ni and Co, and at least one selected from the group consisting of Cu and Cr, and contacting the renewable oils with the catalyst under conditions sufficient to deoxygenate the renewable oils.