contact process: meaning, definition, pronunciation and examples
C2 (Very low frequency; specific technical term)Technical/Scientific/Industrial
Quick answer
What does “contact process” mean?
A modern industrial method for producing sulphuric acid by reacting sulphur dioxide with oxygen in the presence of a vanadium(V) oxide catalyst.
Audio
Pronunciation
Definition
Meaning and Definition
A modern industrial method for producing sulphuric acid by reacting sulphur dioxide with oxygen in the presence of a vanadium(V) oxide catalyst.
In broader contexts, may refer to any industrial or technical process involving direct contact between substances, often used to describe catalytic or reactive manufacturing methods.
Dialectal Variation
British vs American Usage
Differences
Terminology is identical in both varieties. Spelling follows regional conventions only in surrounding text (e.g., 'catalysed' vs 'catalyzed').
Connotations
No difference in connotation; strictly technical term.
Frequency
Equal, very low frequency outside chemistry/engineering contexts.
Grammar
How to Use “contact process” in a Sentence
The contact process + [VERB] (is used, produces, involves)[MODIFIER] + contact process (industrial, modern, standard)Vocabulary
Collocations
Examples
Examples of “contact process” in a Sentence
verb
British English
- The company plans to contact-process the gases at the new facility.
- We are contact-processing sulphur dioxide on an industrial scale.
American English
- The facility will contact-process the SO2 stream.
- They have been contact-processing raw materials for decades.
adverb
British English
- The reaction proceeds contact-process efficiently.
- Not used.
American English
- The gas was treated contact-process style.
- Not used.
adjective
British English
- The contact-process catalyst requires careful maintenance.
- We studied contact-process chemistry in detail.
American English
- The contact-process plant is offline for upgrades.
- Contact-process efficiency has improved.
Usage
Meaning in Context
Business
Rare, except in chemical industry reports: 'The plant's conversion to the contact process improved margins.'
Academic
Common in chemistry and chemical engineering textbooks and lectures.
Everyday
Virtually never used.
Technical
Precise term in industrial chemistry for the primary method of H2SO4 production.
Vocabulary
Synonyms of “contact process”
Strong
Neutral
Weak
Vocabulary
Antonyms of “contact process”
Watch out
Common Mistakes When Using “contact process”
- Using 'contact process' to mean any process involving touch or communication.
- Incorrect capitalisation (not a proper noun).
- Omitting 'the' (e.g., 'They use contact process' -> 'They use the contact process').
FAQ
Frequently Asked Questions
In standard terminology, yes. It specifically denotes the catalytic oxidation of sulphur dioxide to sulphur trioxide for H2SO4 production. The phrase can be modified for other processes (e.g., 'a contact process for nitric acid'), but alone it refers to sulphuric acid.
The name originates from the key step where the reactant gases (SO2 and O2) must come into direct contact with the surface of a solid catalyst (originally platinum, now V2O5) to react.
Yes, it is the almost universally employed industrial method for producing sulphuric acid, accounting for the vast majority of global production.
The older, largely obsolete method was the lead chamber process, which was less efficient, produced more dilute acid, and used nitrogen oxides as catalysts in a chamber lined with lead.
A modern industrial method for producing sulphuric acid by reacting sulphur dioxide with oxygen in the presence of a vanadium(V) oxide catalyst.
Contact process is usually technical/scientific/industrial in register.
Contact process: in British English it is pronounced /ˈkɒn.tækt ˌprəʊ.ses/, and in American English it is pronounced /ˈkɑːn.tækt ˌprɑː.ses/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “None. Technical term, not idiomatic.”
Learning
Memory Aids
Mnemonic
Imagine a factory where chemicals must CONTACT a special catalyst to PROCESS them into acid.
Conceptual Metaphor
PRODUCTION IS A JOURNEY (gasses pass through contact stages to become a new product).
Practice
Quiz
What is the primary catalyst used in the standard contact process?