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- Title
Kinetics and mechanism of acetalisation of furfural to furfural diethyl acetal with Ni–Al layered double hydroxides containing Lewis acid sites.
- Authors
Yali Du; YaLin Feng; ChunLei Zou; Xu Wu; Wei Huang
- Abstract
The nitrate form of Ni–Al layered double hydroxide (denoted as Ni–Al–NO3-LDH) and the corresponding carbonate form (denoted as Ni–Al–CO3-LDH) were tunably fabricated by the hexamethylenetetramine hydrolysis method. A catalytic behaviour investigation proved Ni–Al–CO3-LDH to be an ineffective catalyst, while for Ni–Al–NO3-LDH excellent catalytic activity and reusability were obtained, in the acetalisation of furfural to furfural diethyl acetal. Characterisation and analysis revealed that the appearance of Lewis acid sites in Ni–Al–NO3-LDH was responsible for its excellent catalytic performance. The acquired kinetic parameters confirmed that this reaction was a first-order process and the apparent activation energy was 36.28 kJ mol-1, which is in reasonable agreement with the theoretical result of 38.57 kJ mol-1. Additionally, apart from the typical Brønsted acid catalytic mechanism, a possible Lewis acid catalytic mechanism was probed theoretically.
- Subjects
HYDROXIDES; LEWIS acids; FURFURAL; CATALYSIS; ACTIVATION energy
- Publication
Progress in Reaction Kinetics & Mechanism, 2018, Vol 43, Issue 1, p21
- ISSN
1468-6783
- Publication type
Article
- DOI
10.3184/146867817X15066861009956