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Difference between revisions of "Heterogeneous catalysis"
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Heterogeneous catalysis (view source)
Revision as of 13:55, 15 November 2021
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{{Infobox technology|Name=Heterogeneous catalysis|Category=Conversions|Feedstock=Wide range|Product=Wide range}} | Heterogeneous catalysis is a catalysis in which the catalyst and the feedstock are different phases. In practice, this often means that the feedstock is a liquid or gas and the catalyst is a solid, also known as ''solid catalysis.'' Common heterogeneous catalysts are heterogeneous solid base catalysts and heterogeneous solid acid catalysts. Base catalysts have a high concentration of basic sites that ensures the catalytic activity, often from Ba, Ca, Mg, and Sr and can be mixed or doped. Soap formation is a recurring drawback of these systems. Acid catalysts get their activity either from Brønsted or Lewis acidity and are commonly zirconia, silica, zeolites or zeotype materials. Major advantages of heterogeneous catalysis is the ease of separation, recyclability and high selectivity.<ref name=":0">{{Cite journal|title=A review of sustainable biodiesel production using biomass derived heterogeneous catalysts|year=2021-10-22|author=Semakula Maroa, Freddie Inambao|journal=Engineering in Life Sciences|page=elsc.202100025|doi=10.1002/elsc.202100025}}</ref> {{Infobox technology|Name=Heterogeneous catalysis|Category=Conversions|Feedstock=Wide range|Product=Wide range}} | ||
==Feedstock== | ==Feedstock== | ||
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Lorum ipsum. | Lorum ipsum. | ||
==Product== | ==Product== | ||
Heterogeneous catalysis is widely used throughout chemistry and a plethora of products can be made. Heterogeneous catalysis is often used in the production of biodiesel<ref name=":0" />, but can also be employed in the [[pyrolysis]] process. | |||
==Technology providers== | ==Technology providers== | ||
[space for technology comparison] | [space for technology comparison] | ||