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This article presents a study on the traditional use of the cade oil (miera in Spanish) and the cade oil ovens in the province of Albacete (Spain). Cade oil is the vegetable tar that is obtained by dry distillation of prickly juniper wood (Juniperus oxycedrus L.), used especially as a disinfectant by shepherds and ranchers. This process take place in specific ovens called mereras, miereras or miera ovens. These elements appear in various documentary sources, they are kept in the toponymy and even there are some ovens scattered in Albacete province, in different states of conservation., Se presenta en este artículo un estudio sobre el uso tradicional de la miera y las antiguas mereras en la provincia de Albacete. La miera es el alquitrán vegetal que se obtiene por destilación seca de las cepas de los enebros (Juniperus oxycedrus L.), empleado especialmente como desinfectante por parte de pastores y ganaderos. Este proceso tiene lugar en unos hornos específicos denominados localmente mereras, miereras u hornos de miera. Estos elementos aparecen en diversas fuentes documentales, se mantienen en la toponimia e incluso se conservan algunas de ellas, en diferentes estados de conservación, dispersas por la provincia de Albacete.

New aluminium-alkali metal heterometallic compounds using the bulky ligand OAr = 2,6-bis(diphenylmethyl)-4-tert-butylphenoxide have been synthesized and characterized. The species obtained, [MAlMe (OAr)] (M = Li(2a), Na(2b), K(2c)) and [MAlMe (OAr) ] (M = Li(3a), Na(3b), K(3c)), include some of the few heterobimetallic examples of aluminate complexes with O-donor ligands described so far. Their activity in polymerization towards a difunctional monomer, such as Glycidyl Methacrylate (GMA), was evaluated. The compounds were revealed to be able to polymerize the acrylate groups via vinyl polymerization. Interestingly, the homometallic counterparts [AlXMe(OAr)] (X = Cl, Me), previously described by us, are very active in ROP processes of GMA. The combined polymerization process using both catalysts has also been explored to obtain a polymeric material with an exciting macromolecular architecture.

Adducts of imidazolium carbenes and carbodiimides (NHC-CDI) are emerging as a new class of thermally stable and modular zwitterions with many potential applications. Our study of the interaction of a representative NHC-CDI zwitterion with ZnCl2 in dichloromethane led to the serendipitous discovery of a highly selective, double activation of dichloromethane C–Cl bonds

This paper presents a study of the effects of different treatments on the polymerization activity of mod-ified clays as cocatalysts. To achieve this goal, an intercalating cation was introduced into two smectitesand these clays were then modified with trimethyl aluminium. The results for ethylene polymeriza-tion, when a zirconocene complex was used as catalyst, and the structure analysis, allow us to obtaininteresting deductions about the generation mode of the active species. All active materials employedas support activators presented aluminium in a pentahedral environment together with acidic hydrogenatoms. These two features were detected only after TMA treatment and they seem to be crucial elementsin active cocatalyst generation. Moreover, a material without structural aluminium displayed the bestactivity pointing to the new aluminium species generated in the solid matrix as the determining factorfor the activity. We proposed a synergic effect between Lewis acid aluminium centres and acidic Brönstedprotons that generate the SiOHAl groups that activate the zirconium compound.

This paper presents a study of the effects of different treatments on the polymerization activity of mod-ified clays as cocatalysts. To achieve this goal, an intercalating cation was introduced into two smectitesand these clays were then modified with trimethyl aluminium. The results for ethylene polymeriza-tion, when a zirconocene complex was used as catalyst, and the structure analysis, allow us to obtaininteresting deductions about the generation mode of the active species. All active materials employedas support activators presented aluminium in a pentahedral environment together with acidic hydrogenatoms. These two features were detected only after TMA treatment and they seem to be crucial elementsin active cocatalyst generation. Moreover, a material without structural aluminium displayed the bestactivity pointing to the new aluminium species generated in the solid matrix as the determining factorfor the activity. We proposed a synergic effect between Lewis acid aluminium centres and acidic Brönstedprotons that generate the SiOHAl groups that activate the zirconium compound.