Efficient chemical fixation of CO2 from direct air under environment-friendly co-catalyst and solvent-free ambient conditions

2021 ◽  
Author(s):  
Rajesh Das ◽  
THIRUMAVALAVAN EZHIL ◽  
Athulya S. Palakkal ◽  
Devaraj Muthukumar ◽  
Renjith S. Pillai ◽  
...  
Keyword(s):  
Environmental Remediation ◽  
Value Added ◽  
Solvent Free ◽  
Chemical Fixation ◽  
Ambient Conditions ◽  
Energy Sustainability ◽  
Environment Friendly ◽  
Co Catalyst ◽  
Mild Conditions ◽  
Value Added Products

The capture and conversion of CO2 from direct air into value-added products under mild conditions represents a promising step towards environmental remediation and energy sustainability. Consequently, herein, we report application...

scholarly journals Efficient chemical fixation and defixation cycle of carbon dioxide under ambient conditions

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Saumen Hajra ◽  
Anurag Biswas
Keyword(s):  
Flue Gas ◽  
Room Temperature ◽  
Irreversible Process ◽  
Value Added ◽  
Chemical Transformations ◽  
Chemical Fixation ◽  
Ambient Conditions ◽  
Combustion Technology ◽  
Capture And Release ◽  
Value Added Products

Abstract Chemical fixation of CO2 as a C1 feedstock for producing value-added products is an important post-combustion technology reducing the CO2 emission. As it is an irreversible process, not considered for the CO2 capture and release. Overall, these chemical transformations also do not help to mitigate global warming, as the energy consumed in different forms is much higher than the amount of CO2 fixed by chemical reactions. Here we describe the development of re-generable chemical fixation of CO2 by spiroaziridine oxindole, where CO2 is captured (chemical fixation) under catalyst-free condition at room temperature both in aqueous and non-aqueous medium even directly from the slow stream of flue gas producing regioselectively spirooxazolidinyl oxindoles, a potential drug. The CO2-adduct is reversed back to the spiroaziridine releasing CO2 under mild conditions. Further both the fixation-defixation of CO2 can be repeated under near ambient conditions for several cycles in a single loop using a recyclable reagent.

Chemical fixation of carbon dioxide catalyzed via covalent triazine frameworks as metal free heterogeneous catalysts without a cocatalyst

2019 ◽  
Vol 7 (45) ◽  
pp. 26071-26076 ◽  
Author(s):  
Yi-Meng Li ◽  
Li Yang ◽  
Lei Sun ◽  
Lei Ma ◽  
Wei-Qiao Deng ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Heterogeneous Catalysts ◽  
Chemical Fixation ◽  
Co Catalyst ◽  
Metal Free ◽  
Mild Conditions ◽  
Fixation Of Carbon Dioxide

2,5-DCP-CTF performs as an efficient metal-free catalyst in the chemical fixation of CO2 under mild conditions without the employment of any co-catalyst.

An integrated electrochemical process to convert lignin to value-added products under mild conditions

2016 ◽  
Vol 18 (18) ◽  
pp. 4999-5007 ◽  
Author(s):  
Serafin Stiefel ◽  
Annika Schmitz ◽  
Jens Peters ◽  
Davide Di Marino ◽  
Matthias Wessling
Keyword(s):  
Value Added ◽  
Electrochemical Process ◽  
Mild Conditions ◽  
Value Added Products

The controlled depolymerization of lignin is a promising approach for the generation of value-added compounds from biomass.

Microwave Thermal Conversion of Oil Palm and Related Biomass for Biofuels and Biochars

2014 ◽  
Vol 606 ◽  
pp. 223-226
Author(s):  
Farid Nasir Ani
Keyword(s):  
Oil Palm ◽  
Sustainable Energy ◽  
Renewable Energy Sources ◽  
Value Added ◽  
Thermal Conversion ◽  
Future Trend ◽  
Energy Sources ◽  
Environment Friendly ◽  
The World ◽  
Value Added Products

Energy crisis and continuously fluctuating cost of petroleum have move attention of researchers toward renewable and sustainable energy sources and materials. Biomass or bioresources is one of the abundant and cheap renewable energy sources and materials that is environment friendly in Malaysia and other tropical countries in the world. It has been identified as one of the main sources of the sustainable energy in the fifth fuel strategy in Malaysia. This paper describes several possible routes to provide energy as well as potential value-added products from bioresources. The future trend in thermo-conversion processing of the biomass is the utilization of microwave energy into renewable bio-fuels, materials and chemicals. The potential of uses of bio-oils and bio-chars from oil palm solid wastes for biofuels, materials and chemicals are given. The applications of these renewable sources to produce biofuels, materials and chemicals have been applied in some countries around the world. The implementation of the biomass technology will be best utilized and feasible when the technology is developed locally, fabricated and commission with the utilization of locally produced biomass. With the research and development efforts developed locally towards local expertise will help to produce indigenous technologies, thus reducing the high cost of import technology.

Hollow-structured Si/SiC@C nanospheres as highly active catalysts for cycloaddition of epoxides with CO2 under mild conditions

2016 ◽  
Vol 45 (6) ◽  
pp. 2369-2373 ◽  
Author(s):  
Mei-Pin Liu ◽  
Yan-Ping Luo ◽  
Lei Xu ◽  
Lin Sun ◽  
Hong-Bin Du
Keyword(s):  
Solvent Free ◽  
Chemical Fixation ◽  
Magnesiothermic Reduction ◽  
Catalytic Activities ◽  
Mild Conditions ◽  
Highly Active ◽  
Solvent Free Conditions

Hollow-structured Si/SiC@C nanospheres, prepared through magnesiothermic reduction, exhibit excellent catalytic activities for chemical fixation of CO2 under mild, solvent-free conditions.

scholarly journals Agro-Industrial Avocado (Persea americana) Waste Biorefinery

2021 ◽  
Author(s):  
Anthony Mora-Sandí ◽  
Abigail Ramírez-González ◽  
Luis Castillo-Henríquez ◽  
Mary Lopretti-Correa ◽  
José Roberto Vega-Baudrit
Keyword(s):  
Global Warming ◽  
Environmental Remediation ◽  
Value Added ◽  
Persea Americana ◽  
Added Value ◽  
Biomass Waste ◽  
Physical Chemical ◽  
Biological Conversion ◽  
Medical Material ◽  
Value Added Products

Significant problems have arisen in the last years, such as climate change, global warming, and hunger. These complications are correlated with the depletion and exploitation of natural resources and environmental contamination. Due to overcrowding, the list of challenges for the next few years is growing. A comprehensive approach was made to the agro-industrial production of Avocado (Persea americana) and the management of all its biomass waste. So, bioprocesses and biorefinery can be used to produce high added-value products. A large number of residues are composed of lignin and cellulose. They have many potentials to be exploited sustainably for chemical and biological conversion; physical, chemical, and natural treatments improve the following operations. There are some applications to many fields such as pharmaceutical, medical, material engineering, and environmental remediation. Possible pathways are mentioned to take advantage of Avocado as biofuels, drugs, bioplastics, and even in the environmental part and emerging technologies such as nanotechnology using bioprocesses and biotech. In conclusion, Avocado and its waste could be transformed into high value-added products in industries above to mitigate global warming and save non-renewable energy.

scholarly journals Organic solvent-free lipid extraction from wet Aurantiochytrium sp. biomass for co-production of biodiesel and value-added products

2017 ◽  
Vol 60 (2) ◽  
pp. 101-108 ◽  
Author(s):  
Soojung Park ◽  
Kyochan Kim ◽  
Sang-Il Han ◽  
Eun Jung Kim ◽  
Yoon-E Choi
Keyword(s):  
Organic Solvent ◽  
Lipid Extraction ◽  
Value Added ◽  
Solvent Free ◽  
Free Lipid ◽  
Value Added Products

scholarly journals Ammonia borane enabled upgrading of biomass derivatives at room temperature

2020 ◽  
Vol 22 (18) ◽  
pp. 5972-5977
Author(s):  
Wenfeng Zhao ◽  
Sebastian Meier ◽  
Song Yang ◽  
Anders Riisager
Keyword(s):  
Room Temperature ◽  
Value Added ◽  
Ammonia Borane ◽  
Efficient Catalyst ◽  
Free System ◽  
Mild Conditions ◽  
Catalyst Free ◽  
Value Added Products

An efficient catalyst-free system composed of ammonia borane in water or alcohol was developed to selectively convert biomass-derived feedstock into four value-added products under extremely mild conditions.

An imidazolium-functionalized mesoporous cationic metal–organic framework for cooperative CO2 fixation into cyclic carbonate

2018 ◽  
Vol 54 (4) ◽  
pp. 342-345 ◽  
Author(s):  
Jun Liang ◽  
Ya-Qiang Xie ◽  
Xu-Sheng Wang ◽  
Qiang Wang ◽  
Tao-Tao Liu ◽  
...  
Keyword(s):  
Co2 Fixation ◽  
Metal Organic Framework ◽  
Cyclic Carbonate ◽  
Chemical Fixation ◽  
Cyclic Carbonates ◽  
Co Catalyst ◽  
Mild Conditions ◽  
Catalyst Free ◽  
Metal Organic ◽  
Organic Framework

A mesoporous cationic Cr-based metal–organic framework (MOF), FJI-C10, has been obtained and exhibited excellent performances in chemical fixation of CO2 into cyclic carbonates under co-catalyst free and mild conditions.

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