Damping material syntheses

At the end of the synthesis or before long-term storage, resins must be shrunk and dried to remove all traces of solvent from within the resin particles as described in Protocol 1C. Many resins, when dry, adhere strongly to glass and plastic surfaces, making it difficult to remove the last traces of the material from the reaction vessel or filter funnel. Any resin remaining after removal of the bulk of the material can be washed with DMF down into the bottom corner of the filter-frit, washed with DCM, being careful not to spread the resin back up the sides of the vessel, excess DCM removed, and the damp resin removed with a spatula. 

Ammonia synthesis catalysts are usually transported in sealed metal barrel. In order to prevent the catalyst from broken loose and the barrel leaks because of a loose cap, rolling of the metal barrel should be avoided during transportation. When in storage, moisture and contaminants should be kept out. The best storage period should not exceed six months. If the ammonia synthesis catalyst is exposed to air for a long time, it will absorb moisture and precipitate potassimn turning into a white material. It is better not to use an ammonia synthesis catalyst that has been affected by damp. 

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