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Não indiferença: nova comunidade ideológica de consciência para o Sul Global?

Escobar Brussi*  * É professor do Instituto de Ciência Política da Universidade de Brasília. E-mail: <>. Resumo O artigo apresenta a noção de não indiferença, a mais importante inovação

Effect of Chitosan on the Performance of NiMoP-Supported Catalysts for the Hydrodesulfurization of Dibenzothiophene

Chitosan-added NiMoP catalysts supported on alumina and alumina-titania were studied in the hydrodesulfurization (HDS) of dibenzothiophene (DBT). The preparation of catalysts containing Mo (12 wt%), Ni (3 wt%), P (1.6 wt%), and chitosan/nickel = 2 (mol ratio) was accomplished by sequential pore-filling impregnation varying the order of chitosan integration. Materials were...

Effect of Chitosan on the Performance of NiMoP-Supported Catalysts for the Hydrodesulfurization of Dibenzothiophene

Chitosan-added NiMoP catalysts supported on alumina and alumina-titania were studied in the hydrodesulfurization (HDS) of dibenzothiophene (DBT). The preparation of catalysts containing Mo (12 wt%), Ni (3 wt%), P (1.6 wt%), and chitosan/nickel = 2 (mol ratio) was accomplished by sequential pore-filling impregnation varying the order of chitosan integration. Materials were...

Monometallic Pd and Pt and Bimetallic Pd-Pt/Al2O3-TiO2 for the HDS of DBT: Effect of the Pd and Pt Incorporation Method

Roberto Vargas García,1 José Escobar,3 Leonardo Díaz-García,3 Lucía Díaz Barriga Arceo,1 and Vicente Garibay Febles3 1Departamento de Ingeniería Metalúrgica, ESIQIE-Instituto Politécnico Nacional, 07300

Monometallic Pd and Pt and Bimetallic Pd-Pt/Al2O3-TiO2 for the HDS of DBT: Effect of the Pd and Pt Incorporation Method

Roberto Vargas García,1 José Escobar,3 Leonardo Díaz-García,3 Lucía Díaz Barriga Arceo,1 and Vicente Garibay Febles3 1Departamento de Ingeniería Metalúrgica, ESIQIE-Instituto Politécnico Nacional, 07300

Synthesis and Characterization of Simultaneously-Impregnated Co-Mo-P on Al-MCM41: Effect of Support Precursors

Al-MCM-41 (SiO2/Al2O3=200) materials from various Al and Si sources were synthesized. The calcined solids (823 K) were characterized by N2 physisorption, X-ray diffraction and surface acidity measurements. The sample from tetraethyl orthosilicate-Al(SO4)3 had decreased surface area (836 m2/g) and pore volume (0.88 cm3/g), meanwhile the lowest amount of Al3+ incorporated into the...