Martin Lowry (14 May 1874 – 15 November 1936) was a British physical chemist best known for independently formulating, alongside Johannes Brønsted, the Brønsted–Lowry acid–base theory, which redefined acids and bases in terms of proton donors and acceptors.
Early life and education
Martin Lowry was born in London, England. He attended University College London, where he earned a Bachelor of Science degree in chemistry in 1895 and later a Doctor of Science (D.Sc.) for research on the electrical conductivity of electrolytes.
Academic career
In 1899 Lowry joined the faculty of the University of Cambridge as a lecturer in physical chemistry, becoming a Fellow of Gonville and Caius College. He later held the position of Professor of Chemistry at the University of Manchester (1925–1935), where he supervised research on reaction kinetics, electrolytic dissociation, and catalysis.
Scientific contributions
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Brønsted–Lowry acid–base theory – In a 1923 paper titled “A Theory of the Acid‑Base Phenomena,” Lowry proposed that acids are substances that donate protons (hydrogen ions) and bases are substances that accept protons. This definition extended the earlier Arrhenius concept and provided a more general framework applicable to a wide range of chemical reactions, both in aqueous and non‑aqueous media.
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Electrolyte conductivity – Lowry conducted systematic studies of the conductivity of strong and weak electrolytes, contributing to the quantitative understanding of ionic mobility and the relationship between conductivity and concentration.
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Reaction mechanisms – He investigated the mechanisms of substitution reactions in organic chemistry, emphasizing the role of intermediate species and the influence of solvent polarity.
Publications and honors
Lowry authored numerous articles in Journal of the Chemical Society and Proceedings of the Royal Society. He co‑authored the textbook Physical Chemistry (1926), which was used in British universities for several decades. His contributions were recognized by election to the Fellowship of the Royal Society (FRS) in 1929 and by receiving the Royal Society’s Davy Medal in 1934.
Later life and legacy
Martin Lowry retired from active teaching in 1935 due to ill health and died in Cambridge in 1936. The Brønsted–Lowry acid–base concept remains a foundational principle in modern chemistry, appearing in undergraduate curricula worldwide and underpinning contemporary research in catalysis, biochemistry, and material science.