What was Alfred Nobel's education?

Alfred studied chemistry with Professor Nikolai Nikolaevich Zinin. When Alfred was 18, he went to the United States to study chemistry for four years and worked for a short period under John Ericsson.[1] who designed the American Civil War ironclad USS Monitor. In 1859, the factory was left to the care of the second son, Ludvig Nobel (1831-1888), who greatly improved the business. Alfred, returning to Sweden with his father after the bankruptcy of their family business, devoted himself to the study of explosives, and especially to the safe manufacture and use of nitroglycerine (discovered in 1847 by Ascanio Sobrero, one of his fellow students under Théophile-Jules Pelouze at the University of Turin)