活性MnO2广泛用于氧化α,β-不饱和基团（三键，双键、芳香环）的醇，可选择性氧化烯丙式醇，条件温和，不会引起双键的异构化MnO2的活性及溶剂的选择对反应至关重要，常用的溶剂有二氯甲烷、乙醚、石油醚、己烷、丙酮等。

There are two types of diatomaceous earth - food-grade and pool/filter-grade. Pool/filter-grade diatomaceous earth should only be used for water filtration purposes. The type you'll use for pest ...

Swimming pool filters are not one size fits all. Here's a look at the different types and which one might be best for your ...

What's common to water filters, cosmetics, medicines, livestock feed, paints, and pesticides? They all often include diatomaceous earth (DE). If you've been following the discussions about ...

Filter media is material that actively separates solids from a solution and/or ... Granulated, activated carbon can also be produced by roasting organic material. Diatomaceous earth (DE) is a ...

Description: A continuous drum type vacuum filter specifically designed for mounting "pre-coats", usually of diatomaceous earth, which are then shaved off in very thin layers during a batch run of pre ...

Diatomaceous earth, also known as diatomite, has been used as a material for liquid filters since the 19th century. It is also used in the manufacture of thermal insulation materials, grinding and ...

Te Ngaengae Pool and Fitness aims to be New Zealand’s most sustainable pool when it opens in early December, through ...

Treat yourself to a head that mimics a waterfall or a stone bath mat made of diatomaceous earth. Welcome to Someone Buy This!

Sprinkling diatomaceous earth is one option, as is borax powder or baking soda. Essential oils made from peppermint and clove can help drive fleas and other insects away. Again, these natural ...