Carbonylative Ring Expansion of Epoxides to β‐Lactones Using Inorganic Salt as Catalytic Species Precursor
作者:L. He、J.‐C. Yang、T.‐T. Song、Y. Liu、X.‐B. Lu
DOI:10.1002/ejic.202200496
日期:2022.12.16
cobalt bromide was developed for carbonylative ring expansion of epoxides to β-lactone products in moderate to excellent yields. This work also represents a rare example of epoxide carbonylationunderatmospheric CO pressure.
开发了一种从廉价、空气稳定的溴化钴原位生成低价钴物种的策略,用于环氧化物羰基化扩环生成 β-内酯产品,收率中等至极佳。这项工作也代表了大气 CO2 压力下环氧化物羰基化的罕见例子。
Online centralized monitoring and analysis method for multi-point malodorous gases using electronic nose instrument
申请人:EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
公开号:US10948467B2
公开(公告)日:2021-03-16
Provided is an online centralized monitoring and analysis system using an electronic nose instrument for multi-point malodorous gases, and the system includes an electronic nose instrument, which connects with multiple monitoring points through pipes. On-site malodorous gases in the maximum range of 2.5 km are drawn into the electronic nose instrument within 1 min by the external vacuum pump, and forced to flow through an annular working chamber of a gas sensor array for 30 s by the internal vacuum pump periodically. The modular convolution neural networks online learn the recent time-series responses of the gas sensor array and predict their coming responses, and the modular deep neural networks offline set up the relationship between the responses and multiple concentration items according to odor big data. The electronic nose instrument monitors up to 10 pollution sites cyclically and uses the cascade machine learning model to online predict one dimensionless odor-unit (OU) concentration index value and 10 specified-component concentration index values of malodorous gases.
[EN] FLAVOR COMPOSITION AND ELECTRONIC CIGARETTE LIQUID CONTAINING SAME<br/>[FR] COMPOSITION D'ARÔME ET LIQUIDE DE CIGARETTE ÉLECTRONIQUE LA CONTENANT<br/>[ZH] 风味组合物及包含所述风味组合物的电子烟液