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Ciencia Puerto Rico, a non-profit organization dedicated to promoting science, research and scientific education among Latinos, organized an educational symposium to provide college science majors the tools, opportunities and advice to pursue graduate degrees and succeed in the STEM disciplines. In this article we share our experiences and lessons learned, for others interested in developing large-scale events to recruit underrepresented minorities to STEM and in evaluating the effectiveness of these efforts.
RESUMO
Un carbón bituminoso alto volátil del departamento de Cundinamarca (Colombia), se licuó en presencia de un catalizador polimetálico en un reactor discontinuo de 500 mL a 370, 410 y 450 °C, en atmósfera de hidrógeno, usando tetralina como solvente dador de hidrógeno y tiempo de residencia de 1 h. El uso del catalizador incrementó la conversión del carbón y el rendimiento hacia la fracción de aceites a medida que aumentó la temperatura. El máximo rendimiento a aceites obtenido fue del 67% a 450 °C.
A high volatile bituminous coal from the Department of Cundinamarca (Colombia), was liquefied in the presence of a polymetallic catalyst in a 500 mL batch reactor at 370, 410 and 450 °C under hydrogen atmosphere, using tetralin as hydrogen donor solvent and residence time of 1 h. When the catalyst was used and the temperature increased, the coal conversion and the oil yield increased too. The maximum oil yield obtained was 67% at 450 °C.
Um carvão betuminoso alto volátil do Departamento de Cundinamarca foi liquefeito na presença de um catalisador polimetálico num reactor de 500 mL a 370,410 e 450 °C em atmosfera de hidrogênio, usando tetralina como doador de hidrogênio do solvente e tempo de residencia de 1 h. O uso do catalisador aumentou a conversão do carvão e rendimento de óleo com o aumento da temperatura. O rendimento máximo de óleo obtido foi de 67% a 450 °C.