Nanosized Ni/SiO2 Catalyst Prepared by Homogeneous Precipitation in Wet Silica Gel

2001 ◽  
Vol 1 (2) ◽  
pp. 169-176 ◽  
Author(s):  
Ryoji Takahashi ◽  
Satoshi Sato ◽  
Toshiaki Sodesawa ◽  
Norifumi Nakamura ◽  
Satoshi Tomiyama ◽  
...  
Keyword(s):  
Silica Gel ◽  
Homogeneous Precipitation ◽  
Wet Silica Gel

Quadrupole splitting temperature dependence of high and low affinity deoxyhemoglobin encapsulated in wet silica gel

ICAME 2005 ◽  
2007 ◽  
pp. 279-283
Author(s):  
S. Croci ◽  
O. J. Babalola ◽  
S. Bettati ◽  
C. Valenti ◽  
I. Ortalli ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Quadrupole Splitting ◽  
Silica Gel ◽  
Wet Silica Gel

Measurement of the diffusion coefficient of nickel nitrate in wet silica gel using UV/VIS spectroscope equipped with a flow cell

2000 ◽  
Vol 2 (6) ◽  
pp. 1199-1204 ◽  
Author(s):  
Ryoji Takahashi ◽  
Satoshi Sato ◽  
Toshiaki Sodesawa ◽  
Yumi Kamomae
Keyword(s):  
Diffusion Coefficient ◽  
Silica Gel ◽  
Flow Cell ◽  
Nickel Nitrate ◽  
Wet Silica Gel

Wet Silica Gel; A Convenient Reagent for Deacetalization

Synthesis ◽  
2002 ◽  
Vol 1978 (01) ◽  
pp. 63-65 ◽  
Author(s):  
F. HUET ◽  
A. LECHEVALLIER ◽  
M. PELLET ◽  
J. CONIA
Keyword(s):  
Silica Gel ◽  
Wet Silica Gel

Synthesis and Reactivity of Boron-Functionalized C2B5-closo-Carboranes

2005 ◽  
Vol 60 (6) ◽  
pp. 597-602 ◽  
Author(s):  
Yong Nie ◽  
Avijit Goswami ◽  
Walter Siebert
Keyword(s):  
Silica Gel ◽  
Boron Atom ◽  
Room Temperature ◽  
Cross Coupling ◽  
Coupling Reactions ◽  
Cross Coupling Reactions ◽  
Wet Silica Gel

Treatment of the nido-2,3-Et2C2B4H42−dianion (1) with monoboron reagents led to closo-C2B5 carborane derivatives with functional substituents at the inserted apical boron atom. The reactions of 1 with BX3 (X = Br, I) afforded the corresponding closo-1-X-2,3-Et2C2B5H4 (2a,b), and with PhCΞCBcat (cat = O2C6H4) produced the alkynyl-substituted closo-1-CΞCPh-2,3-Et2C2B5H4 (2c). Pd-catalyzed Negishi-type cross-coupling reactions of 2b with RCΞCZnCl at room temperature gave the corresponding closo-1-CΞCR-2,3-Et2C2B5H4 derivatives 2d-f, R = SiMe3, Me, and tBu, respectively. Compound 3 with two C2B5 moieties linked via a C=C unit was obtained by a similar boron incorporation reaction with cis-Cl2B5(Et)C=C(Et)BCl2. The reactions of 2c,d with Co2(CO)8 afforded the dicobaltatetrahedrane-substituted carboranes 4c and d, in which the clusters C2B5 and Co2C2 are connected by a B-C bond. Compounds 4c,d lost the apical boron on wet silica gel or sand to give the nido-C2B4-C2Co2 compounds 5c,d. Formation of the carboranyl-substituted (η5- C5H5)Co(cyclobutadiene) complex 6c was observed in the reaction of 2c with (η5-C5H5)Co(C2H4)2. The composition of the products follows from NMR and MS data.

scholarly journals Effect of Si Content on Diffusion Coefficient of Nickel Nitrate in Wet Silica Gel.

2001 ◽  
Vol 109 (1274) ◽  
pp. 840-845 ◽  
Author(s):  
Ryoji TAKAHASHI ◽  
Satoshi SATO ◽  
Toshiaki SODESAWA ◽  
Hideyo NISHIDA
Keyword(s):  
Diffusion Coefficient ◽  
Silica Gel ◽  
Nickel Nitrate ◽  
Si Content ◽  
Wet Silica Gel

Dispersion Control of Ni Particles in Porous Silica by Solution Exchange of Wet Silica Gel

1999 ◽  
Vol 28 (4) ◽  
pp. 305-306 ◽  
Author(s):  
Ryoji Takahashi ◽  
Satoshi Sato ◽  
Toshiaki Sodesawa ◽  
Masayuki Kato ◽  
Takaaki Yoshii
Keyword(s):  
Silica Gel ◽  
Porous Silica ◽  
Solution Exchange ◽  
Wet Silica Gel

Solid State Oxidation of Phenols to Quinones with Ammonium Persulfate/Wet SiO2

2005 ◽  
Vol 2005 (3) ◽  
pp. 160-161 ◽  
Author(s):  
Mohammed M. Hashemi ◽  
Zahed Karimi-Jaberi ◽  
Bagher Eftekhari-Sis
Keyword(s):  
Solid State ◽  
Silica Gel ◽  
Ammonium Persulfate ◽  
Solid State Method ◽  
Oxidation Of Phenols ◽  
State Method ◽  
Wet Silica Gel

A solid state method for the oxidation of phenols to quinones is described using ammonium persulfate/wet silica gel as oxidant

Chromium Trioxide Supported onto Wet Silica Gel: Rapid Oxidation of Alcohols to Carbonyl Compounds Under Microwave Irradiation in Solventless System

2002 ◽  
Vol 177 (12) ◽  
pp. 2883-2885 ◽  
Author(s):  
Majid M. Heravi ◽  
Nasrin Farhangi ◽  
Yahya Sh. Beheshtiha ◽  
Karim Assadolah ◽  
Mitra Ghassemzadeh ◽  
...  
Keyword(s):  
Microwave Irradiation ◽  
Silica Gel ◽  
Carbonyl Compounds ◽  
Chromium Trioxide ◽  
Oxidation Of Alcohols ◽  
Wet Silica Gel

ChemInform Abstract: WET SILICA GEL, A CONVENIENT REAGENT FOR DEACETALIZATION

1978 ◽  
Vol 9 (18) ◽  
Author(s):  
F. HUET ◽  
A. LECHEVALLIER ◽  
M. PELLET ◽  
J. M. CONIA
Keyword(s):  
Silica Gel ◽  
Wet Silica Gel
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