Calcium oxide and strontium oxide as environmentally benign and highly efficient heterogeneous catalysts for the Tishchenko reaction of furfural

2001 ◽  
pp. 1000-1001 ◽  
Author(s):  
Tsunetake Seki ◽  
Kazumasa Akutsu ◽  
Hideshi Hattori
Keyword(s):  
Calcium Oxide ◽  
Heterogeneous Catalysts ◽  
Environmentally Benign ◽  
Strontium Oxide ◽  
Tishchenko Reaction ◽  
Highly Efficient

scholarly journals An Overview of Biodiesel Production via Calcium Oxide Based Catalysts: Current State and Perspective

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3950
Author(s):  
Hoora Mazaheri ◽  
Hwai Chyuan Ong ◽  
Zeynab Amini ◽  
Haji Hassan Masjuki ◽  
M. Mofijur ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Calcium Oxide ◽  
Heterogeneous Catalysts ◽  
Low Cost ◽  
Biodiesel Production ◽  
Catalyst Synthesis ◽  
Process Improvements ◽  
Current State ◽  
The Common ◽  
Activity Mechanism

Biodiesel is a clean, renewable, liquid fuel that can be used in existing diesel engines without modification as pure or blend. Transesterification (the primary process for biodiesel generation) via heterogeneous catalysis using low-cost waste feedstocks for catalyst synthesis improves the economics of biodiesel production. Heterogeneous catalysts are preferred for the industrial generation of biodiesel due to their robustness and low costs due to the easy separation and relatively higher reusability. Calcium oxides found in abundance in nature, e.g., in seashells and eggshells, are promising candidates for the synthesis of heterogeneous catalysts. However, process improvements are required to design productive calcium oxide-based catalysts at an industrial scale. The current work presents an overview of the biodiesel production advancements using calcium oxide-based catalysts (e.g., pure, supported, and mixed with metal oxides). The review discusses different factors involved in the synthesis of calcium oxide-based catalysts, and the effect of reaction parameters on the biodiesel yield of calcium oxide-based catalysis are studied. Further, the common reactor designs used for the heterogeneous catalysis using calcium oxide-based catalysts are explained. Moreover, the catalytic activity mechanism, challenges and prospects of the application of calcium oxide-based catalysts in biodiesel generation are discussed. The study of calcium oxide-based catalyst should continue to be evaluated for the potential of their application in the commercial sector as they remain the pivotal goal of these studies.

A facile approach to fabricate halloysite/metal nanocomposites with preformed and in situ synthesized metal nanoparticles: a comparative study of their enhanced catalytic activity

2015 ◽  
Vol 44 (19) ◽  
pp. 8906-8916 ◽  
Author(s):  
Sankar Das ◽  
Subhra Jana
Keyword(s):  
Catalytic Activity ◽  
Comparative Study ◽  
Metal Nanoparticles ◽  
Heterogeneous Catalysts ◽  
Cost Effective ◽  
Environmentally Benign ◽  
Metal Nanocomposites

Halloysite/metal nanocomposites have been synthesized through the immobilization of preformed and in situ synthesized metal nanoparticles over halloysite surfaces, which in turn produce efficient, cost-effective, and environmentally benign heterogeneous catalysts.

Environmentally Benign Route for the Synthesis of Polycarbonate Diols (PCDLs)−Calcined MgAl Hydrotalcites as Heterogeneous Catalysts

2008 ◽  
Vol 47 (7) ◽  
pp. 2140-2145 ◽  
Author(s):  
Yue Xia Feng ◽  
Ning Yin ◽  
Qi Feng Li ◽  
Jun Wei Wang ◽  
Mao Qing Kang ◽  
...  
Keyword(s):  
Heterogeneous Catalysts ◽  
Environmentally Benign

Environmentally Benign, Highly Efficient and Expeditious Solvent-Free Synthesis of Trisubstituted Methanes Catalyzed by Sulfated Polyborate

2017 ◽  
Vol 2 (35) ◽  
pp. 11693-11696 ◽  
Author(s):  
Valmik P. Jejurkar ◽  
Chetan K. Khatri ◽  
Ganesh U. Chaturbhuj ◽  
Satyajit Saha
Keyword(s):  
Solvent Free ◽  
Environmentally Benign ◽  
Sulfated Polyborate ◽  
Highly Efficient ◽  
Solvent Free Synthesis
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