Characterization of nitrogen transformation during microwave-induced pyrolysis of sewage sludge was written by Zhang, Jun;Tian, Yu;Zhu, Jia;Zuo, Wei;Yin, Linlin. And the article was included in Journal of Analytical and Applied Pyrolysis in 2014.Electric Literature of C9H7NO This article mentions the following:
The distribution of pyrolysis products and transformation of N in the char, tar, and gas fractions at different temperatures were investigated during microwave-induced pyrolysis of sewage sludge. The results showed that under the temperature ranges investigated, the thermal decomposition of sewage sludge was faster in the microwave pyrolysis than in the conventional pyrolysis. At temperatures >500°, microwave pyrolysis gave rise to a larger yield of biogas fraction (>10%) and less biotar yield (<15%) compared with those in the conventional pyrolysis. In addition, NH3 and HCN were the main nitrogenous gas during microwave pyrolysis, in which HCN yields were nearly half of those of NH3. FTIR and GC-MS anal. revealed that the pyrolysis of sewage sludge produced 3 N-containing compounds, including the amine/amide, heterocyclic-N and nitrile compounds, in the char and tar products. The pyrolysis temperature played significant roles on the transformation of N in the char, tar, and gas products during microwave pyrolysis. In the experiment, the researchers used many compounds, for example, 1-Hydroxyisoquinoline (cas: 491-30-5Electric Literature of C9H7NO).
1-Hydroxyisoquinoline (cas: 491-30-5) belongs to isoquinoline derivatives. Quinoline is a catabolite of tryptophan, the basic structure of some antihypertensive drugs, such as the peripheral vasodilators prazosin and doxazosin. Lewis acid activation and nucleophilic attack can produce multiple regioisomers in quinolines and pyridines; isoquinolines generally only undergo attack at the 1-position.Electric Literature of C9H7NO
Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem