Pyrolysis of Alcohols and Phenols

Moldoveanu, Serban C.

doi:10.1016/b978-0-444-64000-0.00004-4

Cited by 5 publications

(3 citation statements)

References 80 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the most part, the contents of hydrocarbons and aromatics increased with temperature. This is due to the increase in vapor cracking reactions with increasing temperature, which enhances reactions such as dehydrogenation, dehydration, decarbonylation, decarboxylation, and ring scission. − For instance, methyl alcohol (21.26% of stage 300 °C products) can undergo decomposition as temperature increases to form H 2 , CH 2 O, and CO. With further temperature increase, CO 2 and CH 4 can generate from the oxidation–reduction reaction between two CH 2 O molecules …”

Section: Resultsmentioning

confidence: 99%

Study on the Staged and Direct Fast Pyrolysis Behavior of Waste Pine Sawdust Using High Heating Rate TG-FTIR and Py-GC/MS

et al. 2022

View full text Add to dashboard Cite

To understand the fast pyrolysis kinetics and product evolution of waste pine sawdust, high heating rate thermogravimetry-Fourier transform infrared (TG-FTIR) was used to obtain the kinetic parameters and the chemical groups formed during the pyrolysis process, while pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) was used to investigate the detailed compositions of products under the staged (seven stages from 300 to 600 °C) and direct fast pyrolysis process. Spectral bands were identified for acids, alcohols, aldehydes, aromatics, esters, ethers, hydrocarbons, ketones, phenols, and sugars. Research found that the apparent activation energy for fast pyrolysis is much higher than that of slow pyrolysis. The evolution of CO2 is the major deoxygenation route. Cracking mainly occurred at the 450 °C stage with phenols, ketones, aldehydes, and sugars as the main products. The product distributions for different stages are significantly different; the selectivity of aldehydes decreased, while phenols showed an upward trend with an increase in pyrolysis temperature. Ketones and sugars reached their peak values at 450 °C. The changes in the molecular composition of each stage helped to understand the pyrolysis process. Compared with the staged pyrolysis, the direct pyrolysis process had higher selectivity of acids, aldehydes, esters, and sugars and lower selectivity of phenols, ketones, and alcohols.

show abstract

Section: Resultsmentioning

confidence: 99%

Study on the Staged and Direct Fast Pyrolysis Behavior of Waste Pine Sawdust Using High Heating Rate TG-FTIR and Py-GC/MS

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Moreover, it is noticed that the zeta potential values of the droplets from APC-SNEDDS were between −16.20 ± 1.31 mV and −20.37 ± 2.17 mV, significantly higher than that obtained from blank SNEDDS. The high negative zeta potential of the droplets from APC-SNEDDS is probably due to the ionization of phenolic OH– group of APC in the system [ 42 , 43 ].…”

Section: Resultsmentioning

confidence: 99%

Development of Self-Nanoemulsifying Drug Delivery Systems Containing 4-Allylpyrocatechol for Treatment of Oral Infections Caused by Candida albicans

et al. 2021

View full text Add to dashboard Cite

Clinical use of 4-Allylpyrocatechol (APC), a potential antifungal agent from Piper betle, is limited because of its low water solubility. The current study explores the development of the self-nanoemulsifying drug delivery system (SNEDDS) containing APC (APC-SNEDDS) to enhance APC solubility. Results demonstrated that excipient type and concentration played an important role in the solubility of APC in the obtained SNEEDS. SNEDDS, comprising 20% Miglyol 812N, 30% Maisine 35-1, 40% Kolliphor RH40, and 10% absolute ethanol, provided the highest loading capacity and significantly increased water solubility of APC. Oil-in-water nanoemulsions (NE) with droplet sizes of less than 40 nm and a narrow size distribution were obtained after dispersing this APC-SNEDDS in water. The droplets had a negative zeta potential between −10 and −20 mV. The release kinetics of APC from APC-SNEDDS followed the Higuchi model. The NE containing 1.6 mg APC/mL had effective activity against Candida albicans with dose-dependent killing kinetics and was nontoxic to normal cells. The antifungal potential was similar to that of 1 mg nystatin/mL. These findings suggest that APC-SNEDDS are a useful system to enhance the apparent water solubility of APC and are a promising system for clinical treatment of oral infection caused by C. albicans.

show abstract

“… 2 Glycerol is generally used as a humectant in the food, beverage, and tobacco industries as well as being used as a solvent, a sweetener, and a thickening agent. 3 Glycerol is generally marketed at a purity level of >80%. In order to increase its purity, a series of CG processes are needed according to the original conditions or its contents.…”

Section: Introductionmentioning

confidence: 99%

Recovery of potassium salt by acidification of crude glycerol derived from biodiesel production

Komariah,

Arita,

Cundari

et al. 2024

RSC Adv.

View full text Add to dashboard Cite

show abstract

Pyrolysis of Alcohols and Phenols

Cited by 5 publications

References 80 publications

Study on the Staged and Direct Fast Pyrolysis Behavior of Waste Pine Sawdust Using High Heating Rate TG-FTIR and Py-GC/MS

Study on the Staged and Direct Fast Pyrolysis Behavior of Waste Pine Sawdust Using High Heating Rate TG-FTIR and Py-GC/MS

Development of Self-Nanoemulsifying Drug Delivery Systems Containing 4-Allylpyrocatechol for Treatment of Oral Infections Caused by Candida albicans

Recovery of potassium salt by acidification of crude glycerol derived from biodiesel production

Contact Info

Product

Resources

About