Thermal decomposition pathways of 4-ethylguaiacol under fast pyrolysis and gasification conditions

Development of a New Route for Separating and Purifying 4-Ethyl-2-methoxyphenol Based on the Reaction Mechanism between the Chemical and Calcium Ion

“…This indicated that a relatively low temperature was beneficial for improving the purity of EMP because a higher decomposition temperature led to EMP peroxidation. 26 Considering that light is one of the factors that lead to phenol oxidation, 27 the decomposition process of EMP was studied in the dark. As expected, the purity of EMP reached up to 99.60% when the light was far away from the decomposition device.…”

“…On the other hand, the mass loss trend of the complex decreased smoothly when the temperature increased to above 400 °C. This is because the decomposition of EMP generated low-molecule alkanes and aromatics, such as methane, ethane, ethylene, phenol, etc., when the decomposition temperature was too high . Therefore, around 200 °C was chosen as the decomposition temperature of EMP product recovery.…”

“…Compared with that, the purity of EMP reached 98.30, 98.73, and 98.02% with the decomposition temperature decreasing to 190, 180, and 170 °C, respectively. This indicated that a relatively low temperature was beneficial for improving the purity of EMP because a higher decomposition temperature led to EMP peroxidation . Considering that light is one of the factors that lead to phenol oxidation, the decomposition process of EMP was studied in the dark.…”

Catalytic Hydrodeoxygenation of Model Bio‐oils Using HZSM‐5 and Ni2P/HZM‐5 Catalysts: Comprehension of Interaction

“…The increased amount of phenol over 10 % Ni 2 P/HZSM-5 was assigned to the higher 4-ethylguaiacol conversion by de-ethylation and methoxyl group removal. In a previous study, Ledesma et al also reported the formation of phenol via methoxyl group and ethyl removal [36]. In this case, the highest conversion rate of 59 % for 4-ethylguaiacol was obtained.…”

“…Fractions of 25 % CO, 51.1 % CO 2 , and 9.8 % C 3 H 8 were obtained using the HZSM-5 catalyst. CO and CH 4 were formed via three probable ways, involving formyl group elimination of furfural [37], methoxyl group removal of 4-ethylguaiacol [36], and hydrogenation of CO 2 . CO 2 was produced via the decarboxylation and self-ketonization of acetic acid.…”