Zobrazeno 1 - 10
of 515
pro vyhledávání: '"Fractional crystallization (chemistry)"'
Publikováno v:
Process Safety and Environmental Protection. 156:429-437
As solid waste posing a great threat to the environmental system, the disposal of arsenic-alkali slag has become the top priority in the development of the antimony industry. In this paper, a novel technological scheme combining the advantages of che
Publikováno v:
Angewandte Chemie. 133:20405-20410
Stereoselective inhibition of the nucleation and crystal growth of one enantiomer aided by "tailor-made" polymeric additives is an efficient method to obtain enantiopure compounds. However, the conventional preparation of polymeric additives from chi
Autor:
Quintin Ferraris, Michael C. Qian
Publikováno v:
JDS Communications. 2:177-181
Polar lipids, including sphingomyelin (SM) and other sphingolipids, have nutritional implications in many important metabolic pathways. Milk and whey are valuable sources of these bioactive lipids, differing in SM content compared with other plant-ba
Publikováno v:
Journal of Optics. 51:767-771
The authors of the title paper (Journal of Optics 49:181–186, 2020) claim to have grown a so-called urea potassium dichromate (UPDC) by slow evaporation of an aqueous solution containing equimolar amounts of urea and potassium dichromate and charac
Publikováno v:
Journal of Materials Research and Technology, Vol 12, Iss, Pp 796-806 (2021)
The increasing demand of ultra-high purity aluminum for technological applications has triggered the improvement of purification methods during the recent decades. Some of the most relevant applications for ultra-high purity aluminum include electrol
Autor:
Moo Hyun Lee, V.D. Grigorieva, Jun Seok Choe, Keonah Shin, V.N. Shlegel, Yeongduk Kim, Olga Gileva, HK Park, I. I. Novoselov
Publikováno v:
Inorganic Materials. 56:867-874
A method for the preparation of extra-pure Na2CO3 powder has been developed. The method is based on a fractional crystallization of Na2CO3 from its saturated solutions and its conversion into sodium formate, followed by a melt crystallization. To obt
Publikováno v:
The Journal of Organic Chemistry. 85:10584-10592
A new type of spirocyclic bisoxindole-based C2-symmetric diols (SBIDOLs) was designed and synthesized. A series of racemic SBIDOL derivatives (6a-6g) were readily synthesized from commercially available 2-halo-5-methoxyanilines 1 (X = Cl or Br) throu
Autor:
P. P. Fedorov, A. M. Samoylov
Publikováno v:
Тонкие химические технологии, Vol 14, Iss 6, Pp 31-38 (2019)
Ancient sources indicate that aluminum was known at Ancient Rome. The article attempts to reconstruct the ancient technological process of production of metallic aluminum based on the currently available information about the properties of aluminum a
Publikováno v:
The Journal of Organic Chemistry. 85:3981-3989
A racemic C3-symmetric trihydroxytribenzotriquinacene was resolved on a large scale by fractional crystallization of the corresponding (1S)-camphanic esters, achieving both enantiopure enantiomers (>99% ee) in 35% and 32% yields. The method relies on
Publikováno v:
Journal of Chemical & Engineering Data. 64:5089-5094
Aluminum–ferric separation has attracted significant interest in the field of hydrometallurgy. Using phase equilibria theory, fractional crystallization and separation of a mixed salt solution is a...