Integration of hydrogenation and dehydrogenation based on dibenzyltoluene as liquid organic hydrogen energy carrier. (26th February 2019)

• Record Type: Journal Article
• Authors: Shi, Libin; Qi, Suitao; Qu, Jifeng; Che, Tinghua; Yi, Chunhai; Yang, Bolun
• Is Part Of: International journal of hydrogen energy. Volume 44:Number 11(2019)
• Page Start: 5345
• Page End: 5354
• Publication Date: 2019-02-26
• Subjects: Hydrogenation -- Dehydrogenation -- Dibenzyltoluene -- Hydrogen storage -- Renewable energy; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2018.09.083
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: The heat transfer oil dibenzyltoluene (DBT) offered an intriguing approach for the scattered storage of renewable excess energy as a novel Liquid Organic Hydrogen Carrier (LOHC). The integration of hydrogenation and dehydrogenation in H0-DBT/H18-DBT pairs demonstrated that the feasibility of hydrogenation and dehydrogenation reaction conducted in one reactor with the same catalyst, which would be proposed to simplify the hydrogen storage process. The optimal reaction temperature based on the inhibition of ring opening and cracking was investigated combined with the 1 H NMR analysis. Meanwhile, the ideal catalyst 3 wt% Pt/Al2 O3 for high hydrogen storage efficiency was screened out. Cycle tests of hydrogenation and dehydrogenation integration reaction had shown that the hydrogen storage efficiency was 84.6% after five cycle tests. The integration of hydrogenation and dehydrogenation reaction based on DBT exhibited the ideal thermal stability, which demonstrated its potential as a reversible H2 carrier. Highlights: The integration of hydrogenation and dehydrogenation is conducted. The hydrogen storage process of liquid organic hydrogen carrier is simplified. The integration reaction is catalyzed by supported Pt catalyst. The dibenzyltoluene hydrogen carrier has ideal thermal stability.