The action of the increased nir voids in improving the frostresistance is not yet fully understood, but it is believed that they behave in some wny ns n restriction on the iuovenient of moisture within the concrete. Whatever their precise function, it seems clcnr that these materials do give n sligh
Homogeneous hydrogenation in the presence of sulphur compounds
โ Scribed by A.J. Birch; K.A.M. Walker
- Publisher
- Elsevier Science
- Year
- 1967
- Tongue
- French
- Weight
- 83 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
Chemical modification of polymers via catalysis is of great importance as it provides an efficient synthetic route for the production of novel polymers with desirable physical properties. It also allows the introduction of functional groups that are often inaccessible by conventional polymerization
Homogeneous Hydrogenation of Alkynes and Dienes a) [Cr(CO) 3 (mbz)] = [Cr(CO) 3 (methyl benzoate)] (1 a). Reaction conditions: solvent acetone, reaction temp. 120 8C, substrate : catalyst ratio = 5 : 1. b) [Cr(CO) 3 (nap)] = [Cr(CO) 3 (naphthalene)] (1 b). Reaction conditions: solvent THF, reaction