Recent Developments in Plate Exchangers—Ammonia/Carbon Dioxide Cascade Condensers

2013 ◽  
Vol 34 (5-6) ◽  
pp. 401-408 ◽  
Author(s):  
Zahid Ayub ◽  
M. Sultan Khan ◽  
Amir Jokar ◽  
Tariq S. Khan ◽  
Niel Hayes
Keyword(s):  
Carbon Dioxide ◽  
Recent Developments

A review on recent developments in solar photoreactors for carbon dioxide conversion to fuels

2021 ◽  
Vol 47 ◽  
pp. 101515 ◽  
Author(s):  
Angel Francis ◽  
Shanmuga Priya S. ◽  
Harish Kumar S ◽  
Sudhakar K ◽  
Muhammad Tahir
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Conversion ◽  
Recent Developments

scholarly journals Recent Developments and Current Status of Commercial Production of Fuel Ethanol

2021 ◽  
Author(s):  
Tuan-Dung Hoang ◽  
Nhuan Nghiem
Keyword(s):  
Carbon Dioxide ◽  
Ethanol Production ◽  
Fossil Fuels ◽  
Commercial Production ◽  
Turn Of The Century ◽  
Current Status ◽  
Production Processes ◽  
Commercial Scale ◽  
The World ◽  
Recent Developments

Ethanol produced from various biobased sources (bioethanol) has been gaining high attention lately due to its potential to cut down net emissions of carbon dioxide while reducing burgeoning world dependence on fossil fuels. Global ethanol production has increased more than six-fold from 18 billion liters at the turn of the century to 110 billion liters in 2019 (1,2). Sugar cane and corn have been used as the major feedstocks for ethanol production. Lignocellulosic biomass has recently been considered as another potential feedstock. This paper reviews recent developments and current status of commercial production of ethanol across the world. The review includes the ethanol production processes used for each type of feedstock, both currently practiced at commercial scale and newly developed technologies, and production trends in various regions and countries in the world.

Hierarchically Nanostructured Zeolites of Tunable Porosities with Aerogel Templating

2011 ◽  
Vol 1306 ◽  
Author(s):  
Yousheng Tao ◽  
Morinobu Endo ◽  
Katsumi Kaneko
Keyword(s):  
Carbon Dioxide ◽  
Template Synthesis ◽  
Colloidal Silica ◽  
Lower Cost ◽  
Supercritical Drying ◽  
Nanoporous Carbon ◽  
Carbon Aerogels ◽  
Resorcinol Formaldehyde ◽  
Carbon Xerogels ◽  
Recent Developments

ABSTRACTWe present the synthesis of resorcinol-formaldehyde aerogels and carbon aerogels of different nanoporosities, emphasizing on the recent developments in fabrication pathways of lower cost. Recent results showed a simple way to the production of highly nanoporous carbon xerogels. While using an approach combined colloidal silica nanocasting and carbon dioxide supercritical drying, hydrophilicity-controlled carbon aerogels with high mesoporosity were synthesized. Then, we demonstrate the functions of these aerogels for template synthesis of hierarchically nanostructured zeolites having micropores and mesopores.

scholarly journals Recent developments in organocatalysed transformations of epoxides and carbon dioxide into cyclic carbonates

2021 ◽  
Author(s):  
Liping Guo ◽  
Katie J. Lamb ◽  
Michael North
Keyword(s):  
Carbon Dioxide ◽  
Cyclic Carbonates ◽  
Metal Free ◽  
Recent Developments ◽  
Catalyst Systems

The synthesis of cyclic carbonates from epoxides and carbon dioxide using metal-free catalyst systems is critically reviewed.

scholarly journals Metal Organic Frameworks as Heterogeneous Catalysts in Olefin Epoxidation and Carbon Dioxide Cycloaddition

Inorganics ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 81
Author(s):  
Alessia Tombesi ◽  
Claudio Pettinari
Keyword(s):  
Carbon Dioxide ◽  
Coordination Polymers ◽  
Heterogeneous Catalysts ◽  
Metal Organic Frameworks ◽  
Metal Species ◽  
Olefin Epoxidation ◽  
Crystalline Materials ◽  
Recent Developments ◽  
Metal Organic ◽  
New Research

Metal–organic frameworks (MOFs) are a family of porous crystalline materials that serve in some cases as versatile platforms for catalysis. In this review, we overview the recent developments about the use of these species as heterogeneous catalysts in olefin epoxidation and carbon dioxide cycloaddition. We report the most important results obtained in this field relating them to the presence of specific organic linkers, metal nodes or clusters and mixed-metal species. Recent advances obtained with MOF nanocomposites were also described. Finally we compare the results and summarize the major insights in specific Tables, outlining the major challenges for this emerging field. This work could promote new research aimed at producing coordination polymers and MOFs able to catalyse a broader range of CO2 consuming reactions.

Transition-Metal-Catalyzed Carboxylation of Organic Halides and Their Surrogates with Carbon Dioxide

Synthesis ◽  
2017 ◽  
Vol 50 (01) ◽  
pp. 35-48 ◽  
Author(s):  
Tian-Sheng Mei ◽  
Yue-Gang Chen ◽  
Xue-Tao Xu ◽  
Kun Zhang ◽  
Yi-Qian Li ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Transition Metal ◽  
Value Added ◽  
Alkyl Halides ◽  
Vinyl Halides ◽  
Organic Halides ◽  
Recent Developments ◽  
Benzyl Halides ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

Carbon dioxide is not only an essential component of ‘greenhouse gases’, but also an abundant, renewable C1 feedstock in organic synthesis. The catalytic incorporation of carbon dioxide into value-added chemicals to produce carboxylic acids has received enormous attention. This review summarizes recent developments in the transition-metal-catalyzed carboxylation of organic halides and their surrogates, such as aryl, vinyl, and alkyl halides and pseudohalides.1 Introduction2 Carboxylation of Aryl Halides and Pseudohalides3 Carboxylation of Vinyl Halides and Pseudohalides4 Carboxylation of Benzyl Halides and Pseudohalides5 Carboxylation of Allyl Halides and Pseudohalides6 Carboxylation of Propargyl Halides and Pseudohalides7 Carboxylation of Alkyl Halides and Pseudohalides8 Direct Carboxylation of C–H Bonds9 Conclusions and Perspectives

The Unified Mechanism of Corrosion in Aqueous Weak Acids Solutions: A Review of the Recent Developments in Mechanistic Understandings of Mild Steel Corrosion in the Presence of Carboxylic Acids, Carbon Dioxide, and Hydrogen Sulfide

CORROSION ◽  
10.5006/3474 ◽  
2020 ◽  
Vol 76 (3) ◽  
pp. 268-278 ◽  
Author(s):  
Aria Kahyarian ◽  
Bruce Brown ◽  
Srdjan Nešić
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Sulfide ◽  
Mild Steel ◽  
Carboxylic Acids ◽  
Steel Corrosion ◽  
Weak Acid ◽  
Weak Acids ◽  
Mild Steel Corrosion ◽  
Wide Range ◽  
Recent Developments

The recent developments in mechanistic understandings of mild steel corrosion in the presence of carboxylic acids, carbon dioxide, and hydrogen sulfide, when place side by side, reveal a simple, universal mechanism despite all the differences conventionally presumed for these corroding systems. These findings are recast into a generic mechanistic view of corrosion in aqueous weak acid solutions herein. In this mechanism, the buffering effect resulting from the chemical dissociation reaction inside the boundary layer, is highlighted as an inherent property of all weak acids. The validity of this mechanism was further examined through mathematical experimentation based on a comprehensive mechanistic model. It is shown that this mechanism is able to account for a wide range of characteristic behavior of cathodic currents, including those previously associated with the direct reduction reactions. The results are ultimately presented as a simple and generic categorization of weak acids based on their pKa values to serve as a basis to assess the detrimental effect of any weak acid on mild steel corrosion in aqueous acidic solutions.

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