Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 1 Pseudo-first-order reaction rate constants (k_obs) observed in this study and squared correlation coefficients (R²) in each run

From: Revisiting the mechanism of β-O-4 bond cleavage during acidolysis of lignin VII: acidolyses of non-phenolic C₆-C₂-type model compounds using HBr, HCl and H₂SO₄, and a proposal on the characteristic action of Br⁻ and Cl⁻

Compound	Acid	k_obs (h⁻¹)^a	R²
	HBr	0.637 ± 0.022	1.00
			1.00
			0.999
I	HCl	0.310 ± 0.010	0.998
			1.00
			0.997
	H₂SO₄	0.0154 ± 0.0013	0.918
			0.954
			0.926
	HBr	0.552 ± 0.027	0.999
			0.997
			0.990
II	HCl	0.395 ± 0.019	0.989
			0.988
			0.986
	H₂SO₄	0.191 ± 0.003	0.987
			0.995
			0.999
	HBr	2.88 ± 0.09	1.00
			0.997
			0.998
VI	HCl	1.72 ± 0.09	0.997
			0.999
			0.995
	H₂SO₄	1.50 ± 0.03	0.999
			0.997
			0.998

^aThe approximation to a pseudo-first-order reaction was based on data points observed before recovery yield reached 15% in each compound. The values after the ‘ ± ’ marks are standard deviations obtained from three duplicated runs

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