Pore Sizes of SolidsWiley - Tập 17 Số 12 - Trang 901-908 - 1978
I. Halász, Kornél Martin
AbstractA new, fast, and simple method based on size exclusion chromatography
permits determination of the volumes of open and closed pores of rigid solids
such as silica or porous glasses, together with the specific surface and the
pore‐size distribution for pore diameters ranging from 10 to 4000Å. The results
are in good agreement with those obtained by classical methods (capillary
condensation,... hiện toàn bộ
Cobalt‐Catalyzed Pyridine Syntheses from Alkynes and NitrilesWiley - Tập 17 Số 7 - Trang 505-515 - 1978
Helmut Bönnemann
AbstractSoluble organocobalt catalysts permit selective formation of substituted
pyridines under mild conditions in a single step: mono‐, di‐, and trisubstituted
pyridines can be obtained at will in high conversions and high yields from
nitriles and alkynes. Polynuclear derivatives such as bipyridines can also be
prepared by this method.