Al (III) salts in the physico- chemical treatment of sewage.

Ozgen, Sema


AlCl3 Catalyzed Oxo-Diels-Alder and Wittig-Type Reaction of 2,3-Dimethyl-1,3-Butadiene With Acyl Phosphonates
Nadeem, S.; Demir, Ayhan Sıtkı (Informa UK Limited, 2014-11-02)
Different aliphatic and aromatic acyl phosphonates were synthesized using Arbuzov reaction and subjected to Oxo-Diels-Alder (ODA) reaction with 2,3-dimethyl-1,3-butadiene at -78 degrees C. AlCl3 was found the best catalyst to obtain the desired ODA products from acyl phosphonates in only 30min at low temperature, as compared to 100 degrees C-previously reported. The same reaction was repeated at room temperature but, instead of ODA, Wittig-type product was obtained. All the products were characterized by NM...
Al3+ doped nano-hydroxyapatites and their sintering characteristics
Evis, Zafer (Ceramic Society of Japan, 2006-11-01)
Pure and Al3+ doped nano-hydroxyapatites (HA) were synthesized by a precipitation method to investigate their densification and thermal stability after the air sintering at 1100 degrees C and 1300 degrees C. Second phases were formed after increasing the All, content from 2.5% to 7.5% in HA and increasing the sintering temperature from 1100 degrees C to 1300 degrees C. Al3+ addition into HA resulted in change in the hexagonal lattice parameters from the pure HA. When the sintering temperature was increased ...
Alumina and Tungstophosphoric Acid Loaded Mesoporous Catalysts for the Polyethylene Degradation Reaction
Aydemir, Bugce; Sezgi, Naime Aslı (American Chemical Society (ACS), 2013-11-06)
Polyethylene degradation over alumina and tungstophosphoric acid (TPA) containing ordered mesoporous catalysts was studied in a semibatch reactor. In the noncatalytic degradation reaction, selectivity of C-3 and C-4 hydrocarbons was quite high. However, significant ethylene and C-4 hydrocarbon selectivity was observed in the catalytic degradation reaction depending on the type of catalyst used. Liquid product distribution in the noncatalytic degradation reaction indicated the presence of hydrocarbons, being...
Al-Sm Alloys Under Far-From-Equilibrium Conditions
Kaygusuz, Burçin; Okuyucu, Can; Işıksaçan, Cemil; Meydanoğlu, Onur; Motallebzadeh, Amir; Özerinç, Sezer; Kalay, Yunus Eren (2021-01-01)
Traditional Al alloys have shown tremendous potential in the aerospace industry due to their attractive properties such as ductility, fracture toughness, and fatigue resistance. However, modern aerospace applications call for next-generation Al alloys with a stringent combination of properties such as high strength, low density, and excellent environmental stability. In that sense, we studied highly driven Al-Rare-Earth (RE) alloys under far-from-equilibrium conditions to investigate the possible effects of...
Al/Sb Free InGaAs Unipolar Barrier Infrared Detectors
Uzgur, Fatih; Kizilkan, Ekin; Kocaman, Serdar (2017-04-13)
It is numerically shown that Al/Sb free InGaAs unipolar barrier detectors with superior performance compared to the conventional heterojunction detectors can be constructed. Compositionally graded layers provide the transition between the high bandgap InGaAs barrier and the lattice matched InGaAs absorber layers. In addition, the delta doped layers remove the valence band offset in order to block only majority carriers and allow unimpeded flow of minority carriers. More than one order of magnitude reduction...
Citation Formats
S. Ozgen, “Al (III) salts in the physico- chemical treatment of sewage.,” Middle East Technical University, 1982.