Influence of operating variables on the aqueous-phase reforming of glycerol over a Ni/Al coprecipitated catalyst

García, L. (Universidad de Zaragoza) ; Valiente, A. (Universidad de Zaragoza) ; Oliva, M. (Universidad de Zaragoza) ; Ruiz, J. (Universidad de Zaragoza) ; Arauzo, J. (Universidad de Zaragoza)

Resumen: A systematic study focused on the aqueous-phase reforming of glycerol has been carried out in order to analyze the influence of several operating variables (system pressure, reaction temperature, glycerol content in feed, liquid feeding rate and catalyst weight/glycerol flow rate ratio) on the gas and liquid products. A continuous flow bench scale installation and a Ni/Al coprecipitated catalyst were employed. The system pressure was varied from 28 to 40 absolute bar, the reaction temperature was analyzed from 495 to 510 K, the glycerol content in the feed was studied from 2 to 10 wt%, the liquid feeding rate was changed from 0.5 to 3.0 mL/min and the catalyst weight/glycerol flow rate ratio varied from 10 to 40 g catalyst min/g glycerol. The main gas products obtained were H2, CO2 and CH4, while the main liquid products were 1, 2-propanediol, ethylene glycol, acetol and ethanol. A W/mglycerol ratio of 40 g catalyst min/g glycerol, 34 bar, 500 K, 5 wt% glycerol and 1 mL/min, resulted in a high yield to H2 (6.8%), the highest yield to alkanes (10.7%), the highest 1, 2-propanediol yield (0.20 g/g glycerol) and the highest ethylene glycol yield (0.11 g/g glycerol). The highest acetol yield (0.06 g/g glycerol) was obtained at 34 bar, 500 K, 5 wt% glycerol, 20 g catalyst min/g glycerol and 3 mL/min.

Idioma: Inglés

DOI: 10.1016/j.ijhydene.2018.09.119

Año: 2018

Publicado en: International Journal of Hydrogen Energy 43, 45 (2018), 20392-20407
ISSN: 0360-3199

Factor impacto JCR: 4.084 (2018)

Categ. JCR: CHEMISTRY, PHYSICAL rank: 48 / 147 = 0.327 (2018) - Q2 - T1
Categ. JCR: ENERGY & FUELS rank: 31 / 103 = 0.301 (2018) - Q2 - T1
Categ. JCR: ELECTROCHEMISTRY rank: 8 / 26 = 0.308 (2018) - Q2 - T1

Factor impacto SCIMAGO: 1.1 - Energy Engineering and Power Technology (Q1) - Renewable Energy, Sustainability and the Environment (Q1) - Fuel Technology (Q1) - Condensed Matter Physics (Q1)

Financiación: info:eu-repo/grantAgreement/ES/AEI-FEDER/CTQ2017-86893-R

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Ingeniería Química (Dpto. Ing.Quím.Tecnol.Med.Amb.)
Área (Departamento): Área Técnica. Lab. y Talleres (Dpto. Física Aplicada)
Área (Departamento): Área Tecnologi. Medio Ambiente (Dpto. Ing.Quím.Tecnol.Med.Amb.)