Catalytic Pyrolysis of Biomass

Abstract

Biomass pyrolysis has been a popular research topic due to versatility in products: char, bio-oil, and syngas. What makes the biomass pyrolysis so important is that it provides product options such as fuels or green chemicals. In the case of biomass pyrolysis, lignocellulosic materials undergo thermal degradation in the absence of oxidative environment at atmospheric pressure during a definite residence time, which produces solid char, bio-oil, and syngas. If the bio-oil is going to be used as a fuel source or to be processed for producing chemicals, it requires an upgrading. Catalytic pyrolysis is the most promising method to improve the quality of bio-oil. The present study presents an updated review on catalytic pyrolysis of biomass for the production of upgraded bio-oil. In this context, this review considers recent advances in catalysts and catalytic pyrolysis process.

Acacia Holosericea: An Invasive Species for Bio-char, Bio-oil, and Biogas Production

“…Harvesting process and soil condition of the trees could be the possible causes of this variation [30]. Sometimes, ash content shows catalytic activity, which has an influence on the quality of the product for the pyrolysis procedure [24,31].…”

Recycling of Waste Plastics into Pyrolytic Fuels and Their Use in IC Engines

“…The solid product that has a high surface area and large pores and that is released as a result of the pyrolysis process applied to biomass can be used as activated carbon. In other words, the content of char is composed of condensed organic residues and the inorganic phases, with an average high heating value of 28.5-29 MJ/kg [41].…”

“…In pyrolysis, the feedstock is heated to a certain temperature at a given heating rate without oxygen and held there for a certain time. During pyrolysis, large hydrocarbon molecules are broken down into relatively smaller ones by reactions such as depolymerization, dehydration, decarbonylation, decarboxylation, deoxygenation, oligomerization, and aromatization [41]. The quantity and proportion of pyrolysis products are influenced by many factors such as biomass composition, pyrolysis temperature, heating rate, and catalyst effect.…”

“…As the heating rate increases, the conversion degree of the final products and the yield of gases increase, while the yields of oil and char decrease [41]. Figure 1 shows the typical change in the yields of the final products when there is variation of the heating rate during the pyrolysis process.…”

Karakteristik Dan Aktivitas Antibakteri Asap Cair Dari Biomassa Kayu Putih (Melaleuca Leucadendra) Dan Kayu Jati (Tectona Grandis)

“…Pirolisis terjadi dalam empat tahap, dimulai dari penguapan air, diikuti oleh dekomposisi hemiselulosa, dekomposisi selulosa, dan dekomposisi lignin. Dekomposisi hemiselulosa dan selulosa terjadi pada suhu antara 180°C hingga 350°C (Lingbeck et al, 2014), menghasilkan asam karboksilat dan senyawa karbonil, sedangkan dekomposisi lignin terjadi pada rentang suhu yang lebih luas, yaitu 160-625°C, menghasilkan senyawa fenolik (Kabakcı et al, 2017).…”