Topsoe was founded in 1940 by Dr.
Haldor Topsøe. During
World War II, the company got permission to use the labs at the
Polytechnic Educational Establishment, and in 1943 they moved to facilities in Hellerup, north of Copenhagen. The move meant that the company could expand its field of work because of the access to additional equipment. During the war, Topsoe worked as a consultancy company for several Swedish companies. The contact to Sweden was primarily arranged by the so-called Wallenberg group. In 1944 Topsoe produced the first small batch of
sulfuric acid catalysts. Another company success came in 1948, when the development of the first nickel catalyst was finalized. That same year, Topsoe began cooperating with Vargöns AB in Vargön, Sweden with the aim of producing a catalyst for ammonia synthesis. Shortly after the war had come to an end, Topsoe became engaged in various activities in Mexico that were connected to Topsoe's financial contacts in the US, including the
World Bank. This led to the company's involvement in the planning of
Mexico's technical development as well as in the American agronomist Norman Borlaug's experiment with wheat in the Sonora region of Northern Mexico. In the years following 1950, Topsoe renewed its contacts with the research environment of the
Soviet Union and maintained close contact for several years with both the scientific environment and organizations involved with engineering within the field of catalysis. In 1955, Topsoe established the French subsidiary Haldor Topsøe S.A. and opened an office in
Paris. Throughout the years, Topsoe was involved in many industrial activities, some privately and some publicly governed, and built several industrial plants. One of the bigger projects in which Topsoe was involved, was the construction of a heavy water plant in Northern France. In 1958, Topsoe bought the estate Linderupgaard, situated outside
Frederikssund, and the estate has been used for production of catalysts ever since. Topsoe opened a department in New York in 1961, called Haldor Topsoe Inc., and four years later the company bought a lot in
Houston,
Texas, that is now being used for one of Topsoe's production plants. In 1971, the office was moved from New York to Houston. Topsoe has delivered process design and technologies for several big ammonia plants around the world. In 1972, the ownership of Topsoe changed from being a privately owned company to being a public limited company, owned 50/50 by Haldor Topsøe and the Italian company Snamproggeti. In 1973, Topsoe headquarters moved to
Søborg from
Vedbæk, where it had been situated since 1964. Just a year later, in 1974, Topsoe moved the headquarters to its present location in
Kongens Lyngby, just outside
Copenhagen, Denmark. In the beginning of the 1980s, Topsoe opened two offices in Asia: Delhi and Beijing. In the beginning of the 1990s to the mid-1990s, Topsøe opened offices in Moscow and Jaroslavl in Russia, as well as a department in Los Angeles in the US. In 2007, Haldor Topsøe bought back all shares from the Italian contracting company
Saipem (which had bought Snamprogetti) for DKK 2.6 billion. That same year, Haldor Topsoe's subsidiary, Topsoe Fuel Cell, initiated the construction of Denmark's first fuel cell production plant that produces high temperature solid oxide fuel cells (also known as SOFC) for environmentally friendly, green electricity and heat for trucks, houses, hospitals and supermarkets. In June 2017, Umicore announced "that it has reached an agreement to acquire the heavy duty diesel and stationary catalyst businesses of Haldor Topsoe for an enterprise value of DKK 900 million (approx. EUR 120 million) plus an earn-out"; this acquisition should be earnings accretive from 2018. In March 2019, Topsoe sold 30% of their stake to Singaporean investment firm
Temasek for an undisclosed price. In 2022, Haldor Topsoe underwent a rebranding to Topsoe. In September 2022, Topsoe won the world’s largest ever hydrogen electrolyses order to provide 5GW of its
solid-oxide electrolyses. == Criticism ==