ALDOL CONDENSATION OF FURFURAL WITH ACETONE CATALYZED BY NITROGENATED ORGANIC BASES: A PRELIMINARY STUDY OF THE CATALYTIC PERFORMANCE TOWARD THE PRODUCTION OF BIOJET FUEL

Faria, Vinícius W.; Almeida, Guilherme C.; Mota, Cláudio J. A.

doi:10.21577/0100-4042.20170225

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Artigo • Quím. Nova 41 (6) • June 2018 • https://doi.org/10.21577/0100-4042.20170225 copy

ALDOL CONDENSATION OF FURFURAL WITH ACETONE CATALYZED BY NITROGENATED ORGANIC BASES: A PRELIMINARY STUDY OF THE CATALYTIC PERFORMANCE TOWARD THE PRODUCTION OF BIOJET FUEL

Authorship SCIMAGO INSTITUTIONS RANKINGS

The aldol condensation between furfural and acetone was studied in the presence of organic bases, such as Piperazine (PIP), 3-Aminopropyltriethoxysilane (APTES) and 1,5,7-Triazabicyclo [4.4.0] dec-5-ene (TBD), as basic catalysts. The latter base showed the highest conversion rates of furfural and high selectivity to the single-condensation product 4-(2-Furyl)-3-buten-2-on (F-Ac). These data are consistent with the greater basicity of TBD in relation to the other amines. This study was carried out aiming at the future anchoring of the bases in inorganic supports for the production of heterogeneous catalysts.

Keywords:
furfural; acetone; aldol condensation; TBD

Catalisador	Conversão furfural [%]	Seletividade F-OH [%]	Seletividade F-Ac [%]	F.T. [mmol F-Ac mmol cat^-1 h^-1]
PIP	2	35	65	0,08
APTES	30	45	55	0,99
TBD	84	27	73	3,67

Razão molar acetona/furfural	Tempo(hora)	Conversão(%)	SeletividadeF-OH(%)	SeletividadeF-Ac(%)	RendimentoF-Ac(%)
1:2	6	76	20	80	61
1:1	6	80	15	85	68
5:1	6	82	15	85	70
10:1	6	97	5	95	92
15:1	6	98	4	96	94

Entrada	Catalisador	% mol catalisador/mol furfural	Temperatura (ºC)	Tempo (h)	Conversão Furfural (%)	Seletividade F-Ac (%)
1	Hidrotalcita Co-Al^a,b,²¹21 Xu, C.; Liu, Y. G. X.; Xin, R.; Wang , Z.; RSC Adv. 2013, 3, 793.	-	120	10	83	68
2	MgO-ZrO2^c,²⁰20 Faba, L.; Diaz, E.; Ordonez, S.; Biomass Bioenergy 2013, 56, 592.	4,5	50	24	81	14
3	MgO-Al₂O₃^c,²⁰20 Faba, L.; Diaz, E.; Ordonez, S.; Biomass Bioenergy 2013, 56, 592.	4,5	50	24	64	31
4	TBD^a	6	50	1	100	100
5	TBD^a	3	50	3	100	100
6	TBD^a	1,4	50	7	99	95

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