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Urea

About: Urea is a research topic. Over the lifetime, 21394 publications have been published within this topic receiving 382444 citations. The topic is also known as: carbamide & carbonic acid diamide.


Papers
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Journal ArticleDOI
TL;DR: An unprecedented protocol for urea synthesis directly from methanol and amine was accomplished, producing hydrogen as the sole byproduct and obtaining unsymmetrical urea derivatives via a one-pot, two-step reaction.

91 citations

Journal ArticleDOI
TL;DR: In this paper, five kinds of iron oxides (Fe 2 O 3 ) were prepared from iron alum and iron nitrate by using aqueous ammonia or urea; the surface and catalytic properties were studied.

91 citations

Journal ArticleDOI
01 Jun 1962-Nature
TL;DR: Toxic Effect of Urea on Plants: Nitrite Toxicity arising from the Use of urea as a Fertilizer as discussed by the authors, which is the most commonly used Urea-based fertilizer.
Abstract: Toxic Effect of Urea on Plants: Nitrite Toxicity arising from the Use of Urea as a Fertilizer

91 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20231,000
20221,982
2021433
2020502
2019589
2018557