Now showing items 21-30 of 1384
Kinetic evaluation of the dehydration of Yb(III) Lu(III) and Y(III) 4-chlorobenzylidenepyruvate by thermogravimetry (TG)
(Editora Unesp, 2006-01-01)
A cinética de desidratação dos 4-clorobenzalpiruvatos de itérbio, lutécio e ítrio foi estudada utilizando a Termogravimetria e os parâmetros cinéticos obtidos pelo método Flynn e Wall sugerem que a etapa de desidratação ...
Síntese, caracterização e análise térmica dos sais de lítio, sódio e potássio do ácido palmítico e do seu éster etílico
(Sociedade Brasileira de Química, 2008)
Alkaline salts of the palmitic acid were synthesized and characterized from aqueous and ethanolic medium. The salts were characterized by elemental analysis (EA) and infrared spectroscopy (IR). EA and IR, being its synthesis ...
Preparation and thermal decomposition of solid-state cinnamates of lighter trivalent lanthanides
Some new compounds of cinnamic acid with lighter trivalent lanthanides were prepared in the solid state. The compounds have general formula ML3·H2O, where L is cinnamate (C6H5-CH=CH-COO-) and M is La, Ce, Pr, Nd or Sm. ...
Solid-state compounds of 4-chlorobenzylidenepyruvate with lanthanides preparation and thermal studies
Solid-state compounds Ln-4Cl-BP, where Ln represents lighter trivalent lanthanides and 4Cl-BP is 4-chlorobenzylidenepyruvate, were prepared. Thermogravimetry, derivative thermogravimetry (TG and DTG), differential scanning ...
Thermal decomposition of some analgesic agents
Thermogravimetry, derivative thermogravimetry (TG, DTG) and differential scanning calorimetry (DSC), were used to study the thermal behaviour of mefenamic acid, ibuprofen, acetaminophen, sodium diclofenac, phenylbutazone, ...
A thermal behaviour study of solid-state cinnamates of the latter trivalent lanthanides and yttrium(III)
Some new compounds of cinnamic acid with the latter trivalent lanthanides and yttrium(III) were synthesized in the solid state. The compounds have the general formula LnL3, where Ln represents trivalent Eu to Lu or Y ions ...
TGA-FTIR OF PdSn FINE SOLID SUPPORTED ON MgO: CYCLOHEXENE REDUCTION
(Sociedad Chilena de Química, 2004)