scholarly journals Two different zinc(II)-aqua complexes held up by a metal-oxide based support: Synthesis, crystal structure and catalytic activity of [HMTAH]2[{Zn(H2O)5}{Zn(H2O)4}{Mo7O24}]·2H2O (HMTAH = protonated hexamethylenetetramine)

2008 ◽  
Vol 120 (1) ◽  
pp. 95-103 ◽  
Author(s):  
T. Arumuganathan ◽  
A. Srinivasarao ◽  
T. Vijay Kumar ◽  
Samar K. Das
Keyword(s):  
Crystal Structure ◽  
Catalytic Activity ◽  
Metal Oxide ◽  
Aqua Complexes

scholarly journals Crystal structure of a complement factor D mutant expressing enhanced catalytic activity.

1995 ◽  
Vol 270 (52) ◽  
pp. 31414
Author(s):  
Sunghee Kim ◽  
Sthanam V.L. Narayana ◽  
John E. Volanakis
Keyword(s):  
Crystal Structure ◽  
Catalytic Activity ◽  
Complement Factor

The Study on Solid Superacid Synthesis of K12A with Manufacturing Equipment

2012 ◽  
Vol 583 ◽  
pp. 285-288
Author(s):  
Dong Mei Zhao ◽  
Xue Peng Liu
Keyword(s):  
Catalytic Activity ◽  
Metal Oxide ◽  
Design Method ◽  
Orthogonal Design ◽  
Manufacturing Equipment ◽  
Solid Superacid ◽  
Orthogonal Design Method ◽  
Superacid Catalyst ◽  
Calcined Temperature ◽  
Very High

By orthogonal design method, Catalytic activity of /ZrO2 solid superacid is studied, and the influence of catalyst characteristic and structure by manufacturing equipment is issued. It is concluded that the best prepared conditions of the superacid catalyst /ZrO2 for the synthesis of Octyl-Polyglycoside are followed:(1) PH=9.5; (2) calcined temperature at 500; (3) M(H2SO4)=0.5mol/L. Using this kind of catalyst the conversion of glueoside may reach as high as 96% in the synthesis of OCtyl-Polyglycoside and the selectivity is very high for the synthesis of Octyl-Polyglycoside. By introducing other metal oxide, the catalytic activity of complex solid superacid is studied.

Synthesis, crystal structure and catalytic activity of some new chiral ansa-metallocenes of yttrium, lanthanum, samarium, lutetium and of zirconium

1999 ◽  
Vol 574 (2) ◽  
pp. 228-240 ◽  
Author(s):  
Herbert Schumann ◽  
Kerstin Zietzke ◽  
Roman Weimann ◽  
Jörg Demtschuk ◽  
Walter Kaminsky ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Catalytic Activity

scholarly journals Synthesis and catalytic activity of homoleptic lanthanide-tris(cyclopropylethinyl)amidinates

2015 ◽  
Vol 39 (10) ◽  
pp. 7595-7601 ◽  
Author(s):  
Farid M. Sroor ◽  
Cristian G. Hrib ◽  
Liane Hilfert ◽  
Sabine Busse ◽  
Frank T. Edelmann
Keyword(s):  
Crystal Structure ◽  
Catalytic Activity ◽  
X Ray Diffraction ◽  
X Ray ◽  
Type C

New unsolvated, homoleptic lanthanide(iii) tris(cyclopropylethinylamidinate) complexes of the type [c-C3H5–CC–C(NR)2]3Ln (R = iPr, cyclohexyl; Ln = Nd, Sm, Ho) have been prepared and the crystal structure of the holmium derivative [c-C3H5–CC–C(NiPr)2]3Ho has been confirmed by X-ray diffraction.

Synthesis, Characterization, and Crystal Structure of Several Novel Acidic Ionic Liquids: 1-ethyl-2-alkyl-benzimidazolium Tetra-Fluoroborate

2013 ◽  
Vol 457-458 ◽  
pp. 139-143 ◽  
Author(s):  
Ming Tian Wang ◽  
Chang Ping Pan ◽  
Wei Peng Gai ◽  
Xiao Xia Lv ◽  
Min Gang Zhai ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Ionic Liquid ◽  
Acetic Acid ◽  
Catalytic Activity ◽  
Lamellar Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Acidic Ionic Liquid ◽  
Acidic Ionic Liquids ◽  
Good Catalytic Activity

A series of novel acidic ionic liquid: 1-ethyl-2-alkyl-benzimidazolium tetra-fluoroborate (alkyl= Et, Pr-n, Bu-n) were prepared by simple acid-based neutralization of 1-ethyl-2-alkyl-benzimidazole and tetrafluoroboric acid. The compounds were characterized by FTIR spectra, elemental analysis,1HNMR spectra and thermogravimetric analysis. These novel tetra-fluoroborate salts show good catalytic activity to esterification of benzyl alcohol and acetic acid. Furthermore, a crystal of ([H-ebBiBF4) was prepared with the crystal structure and determined by X-ray diffraction analysis. The molecular is of lamellar structure as mainly π electron ring is stacked interleaving between two layers. The results of cation and anion arranged orderly in pair indicate that the coulombic attraction is more dominant. Simultaneously, the weak local hydrogen bonds C-H···F exist in the molecules.

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