The review describes recent knowledge acquired in the thermal degradation of lignin as an
approach to obtaining valuable chemicals or hydrocarbon fuel. Information on the …

Lignin is a carbon-rich renewable source owning aromatic structure units, which is an
important constituent in biomass. Hydrothermal conversion of lignin is widely studied as a …

Energy from biomass, bioenergy, is a perspective source to replace fossil fuels in the future,
as it is abundant, clean, and carbon dioxide neutral. Biomass can be combusted directly to …

Hydrothermal technologies are broadly defined as chemical and physical transformations in
high-temperature (200–600° C), high-pressure (5–40 MPa) liquid or supercritical water. This …

Supercritical water gasification (SCWG) of coal is a new clean coal conversion technology.
Due to the unique properties of supercritical water, SCWG has many advantages compared …

The products of base‐catalyzed liquid‐phase hydrolysis of lignin depend markedly on the
operating conditions. By varying temperature, pressure, catalyst concentration, and …

Nowadays, substantial efforts are devoted to decrease our dependence on fossil fuels. This
change will heavily rely on development of new and improved catalytic processes. Over the …

The use of hydrogen as clean fuel gas in the power generation sector becomes essential to
reduce the environmental issues related to conventional fuel usage. By avoiding biomass …

Hydrogen production from biomass gasification in supercritical water is a new technology,
which was developed in last two decades. Biomass energy of low quality can be converted …

The technology of supercritical water gasification of coal can converse coal to hydrogen-rich
gaseous products effectively and cleanly. However, the slugging problem in the tubular …