Influence of RANEY Nickel on the Formation of Intermediates in the Degradation of Lignin

Table 5

Apparent Arrhenius parameters of a first order degradation of guaiacol by pyrolysis and hydrothermal treatment in subcritical, near critical and supercritical water.

	EA	𝐄𝐀^′	Log	Log
	kJ/mol	kJ/mol	(𝐤𝟎/min^−1)	(𝐤^′𝟎/min^−1)
Pyrolysis [26]	𝟐𝟑𝟔±𝟏𝟗		𝟏𝟕.𝟒±𝟎.𝟒
Near critical water		𝟏𝟕𝟎±𝟏𝟐		𝟏𝟐.𝟐±𝟎.𝟖
Subcritical water [15]	33.4		0.07
Supercritical water [15]	39.35		1.5