Abstract: This invention discloses one kind of co-doped carbon composite material with transition metal and nitrogen for removal of formaldehyde and its preparation method. The materials are composed of non-noble metals as active components and nitrogen-doped carbon carrier; The non-noble metal active components are transition metal salts of nickel, cobalt, iron and manganese or their mixtures. The carbon composite materials reported in this invention have high specific surface area and strong adsorption and catalytic decomposition performance for formaldehyde, and harsh conditions (e.g. high reaction temperature etc.) are not required for catalytic oxidation of formaldehyde. It also features in low cost, high catalytic efficiency at room temperature and long durability etc.

Abstract: The invention discloses a method for detecting the release performance of flavors and fragrances microcapsule, comprising the following steps: Using SPME to adsorb the gas sample released by the perfume microcapsules in different time periods under constant temperature and humidity conditions. The SPME adsorption time was 10 s˜30 min and the analytical time in GC/MS was is 1 s˜100 min, and the compounds detected by GC-MS were quantified by area normalization method. The method of the invention is simple and rapid, and is suitable for analyzing and detecting the sustained release of the perfume microcapsules. Using SPME technology, the detection process was without the use of organic solvents and green pollution. The invention can be directly used for the detection of the release of gas components of various perfume microcapsule products without destroying the sample morphology and structure, and more truly reflecting the release performance of the flavors and fragrances microcapsule in real life.

Abstract: A method of inclusive separation of acetophenone and ?-methylbenzyl alcohol is provided. According to the different binding ability of Cyclodextrin (CDs) with acetophenone and ?-methylbenzyl alcohol, selective separation in mild condition can be possible. This has the advantages of mild separation conditions, high separation efficiency, simplicity, reuse ability of separation media, energy conservation and environmental protection, etc.

Abstract: A method of inclusive separation of acetophenone and ?-methylbenzyl alcohol is provided. According to the different binding ability of Cyclodextrin (CDs) with acetophenone and ?-methylbenzyl alcohol, selective separation in mild condition can be possible. This has the advantages of mild separation conditions, high separation efficiency, simplicity, reuse ability of separation media, energy conservation and environmental protection, etc.