Effect of the Structure of Benzo- and Dibenzocrown Ethers on Their Reaction with the Aerosil Surface

The acidity of the H-form aluminosilicates, which include ZSM-5, mordenite, Y-faujasite, Al-containing aerosils and silica gels, and the layering of aluminosilicate compounds on an aerosil surface was measured by temperature-programmed mass spectrometry desorption (TPD) of NH3. It was found that the desorption energies of NH3 decrease in the order: H-M > H-ZSM-5 > Al-aerosils> H-Y > CVD Al-silicates> Al-silica gels. The catalytic activities of the studied samples in 2-propanol dehydration and cumene cracking have been shown to decrease in the same order.

Download Full-text

Effect of the aerosil surface on its interaction energy with polyvinylchloride and on mechanical properties

Polymer Science U S S R ◽

10.1016/0032-3950(85)90316-8 ◽

1985 ◽

Vol 27 (10) ◽

pp. 2368-2371

Author(s):

S.M. Yushkova ◽

V.V. Gazeyev ◽

A.A. Tager ◽

L.M. Martynova

Keyword(s):

Mechanical Properties ◽

Interaction Energy ◽

Aerosil Surface

Download Full-text

ChemInform Abstract: Selective Sensing of Caesium Ions by Novel Calix[4]arene Bis(dibenzocrown) Ethers in an Aqueous Environment.

ChemInform ◽

10.1002/chin.199849215 ◽

2010 ◽

Vol 29 (49) ◽

pp. no-no

Author(s):

J. S. KIM ◽

I. H. SUH ◽

J. K. KIM ◽

M. H. CHO

Keyword(s):

Aqueous Environment ◽

Dibenzocrown Ethers

Download Full-text

The Peculiarities of the Reaction of Benzo- and Dibenzocrown Ethers with N-Halogenosuccinimides

Macroheterocycles ◽

10.6060/mhc2008.1.85 ◽

2008 ◽

Vol 1 (1) ◽

pp. 85-89 ◽

Cited By ~ 2

Author(s):

Sergei A. Kotlyar ◽

Sergei M. Pluzhnik-Gladyr

Keyword(s):

Dibenzocrown Ethers

Download Full-text

Emulsifying Effect of Solid Particles on Epoxy Resin E-44

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.233-235.337 ◽

2011 ◽

Vol 233-235 ◽

pp. 337-343

Author(s):

Li Xin Zhou ◽

Jun Xia Wang ◽

Chu Ping Ye ◽

Ling Lan Li ◽

Chang Li Lu

Keyword(s):

Calcium Carbonate ◽

Epoxy Resin ◽

Disperse Phase ◽

Solid Particles ◽

Experimental Results ◽

Multiple Emulsion ◽

Aqueous Emulsion ◽

Aerosil Surface ◽

Result Show ◽

Surface Modified

Emulsify epoxy resin E-44 with heavy calcium carbonate, light calcium carbonate, aerosil, surface-modified aerosil and bentonite BP-187. The experimental results show that neither heavy calcium carbonate nor light calcium carbonate has emulsifying effect. O/W type emulsion can not be obtained with aerosil and bentonite BP-187. Surfactant-modified aerosilCTAB-SiO2and DTAB-SiO2do have emulsifying effect, and they can transform into more stable O/W type emulsion. The synergy between BP-17, EP-1 and CTAB-SiO2is obvious. Hydrophilic emulsifier EP-1 could be replaced by CTAB-SiO2or BP-187 completely or partly to prepare stable O/W emulsion. The TEM result show that the disperse phase of the emulsion produced by CTAB-SiO2and the compound emulsifier of CTAB-SiO2and BP-187 is irregular floc, and the disperse phase of the aqueous emulsion produced by the compound emulsifier of CTAB-SiO2and EP-1 is regular globular or ellipsoidal multiple emulsion.

Download Full-text

Infrared spectral study of the interaction of isoprene with a modified aerosil surface

Journal of Applied Spectroscopy ◽

10.1007/bf00605759 ◽

1970 ◽

Vol 12 (1) ◽

pp. 67-70

Author(s):

K. V. Nel'son ◽

I. V. Ikonitskii ◽

V. A. Ryzhkov

Keyword(s):

Spectral Study ◽

Aerosil Surface ◽

Infrared Spectral

Download Full-text