# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/peter-jacob-hjelm
# Generated: 2026-08-14T04:49:14.285Z

schema: https://schema.org/Person
url: "https://fame.am/person/peter-jacob-hjelm"
name: "Peter Jacob Hjelm"
slug: "peter-jacob-hjelm"
description: "Peter (Petter) Jacob Hjelm was a Swedish chemist and the first person to isolate the element molybdenum in 1781, four years after its discovery by Swedish chemist Carl Wilhelm Scheele. Working with Molybdic acid, Hjelm chemically reduced molybdenum oxide with carbon in an oxygen-free atmosphere, resulting in carbon dioxide and a near-pure dark metal powder to which he gave the name 'molybdenum'. His first publication on molybdenum appeared in 1790."
tagline: "Swedish chemist"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Peter_Jacob_Hjelm_(cropped).png?width=1200"
gender: "male"
country:
  name: "Sweden"
  isoCode: "SE"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1746-10-02"
deathDate: "1813-10-07"
livingStatus: "DECEASED"
scores:
  popularity:           43.93
  momentum:             0.1639344262295082
  historical:           14.67336266666667
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  70
  trendDirection:       "STABLE"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://ta.wikipedia.org/wiki/%E0%AE%AA%E0%AF%80%E0%AE%9F%E0%AF%8D%E0%AE%9F%E0%AE%B0%E0%AF%8D_%E0%AE%9A%E0%AE%BE%E0%AE%95%E0%AF%8D%E0%AE%95%E0%AE%AA%E0%AF%8D_%E0%AE%87%E0%AE%9A%E0%AF%8D%E0%AE%9A%E0%AF%86%E0%AE%B2%E0%AE%AE%E0%AF%8D"
    title: "பீட்டர் சாக்கப் இச்செலம்"
    type:  "WIKIPEDIA"
  - url: "https://ar.wikipedia.org/wiki/%D8%A8%D9%8A%D8%AA%D8%B1_%D9%8A%D8%A7%D9%83%D9%88%D8%A8_%D9%87%D9%8A%D9%84%D9%85"
    title: "بيتر ياكوب هيلم"
    type:  "WIKIPEDIA"
  - url: "https://azb.wikipedia.org/wiki/%D9%BE%DB%8C%D8%AA%D8%B1_%D8%AC%D8%A7%DA%A9%D9%88%D8%A8_%D9%87%DB%8C%D9%84%D9%85"
    title: "پیتر جاکوب هیلم"
    type:  "WIKIPEDIA"
  - url: "https://ca.wikipedia.org/wiki/Peter_Jacob_Hjelm"
    title: "Peter Jacob Hjelm"
    type:  "WIKIPEDIA"
  - url: "https://cs.wikipedia.org/wiki/Peter_Jacob_Hjelm"
    title: "Peter Jacob Hjelm"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Peter_Jacob_Hjelm"
    title: "Peter Jacob Hjelm"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Peter_Jacob_Hjelm"
    title: "Peter Jacob Hjelm"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Peter_Jacob_Hjelm"
    title: "Peter Jacob Hjelm"
    type:  "WIKIPEDIA"
  - url: "https://fi.wikipedia.org/wiki/Petter_Jakob_Hjelm"
    title: "Petter Jakob Hjelm"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Peter_Jacob_Hjelm"
    title: "Peter Jacob Hjelm"
    type:  "WIKIPEDIA"
  - url: "https://id.wikipedia.org/wiki/Peter_Jacob_Hjelm"
    title: "Peter Jacob Hjelm"
    type:  "WIKIPEDIA"
  - url: "https://it.wikipedia.org/wiki/Peter_Jacob_Hjelm"
    title: "Peter Jacob Hjelm"
    type:  "WIKIPEDIA"
  - url: "https://mg.wikipedia.org/wiki/Peter_Jacob_Hjelm"
    title: "Peter Jacob Hjelm"
    type:  "WIKIPEDIA"
  - url: "https://pl.wikipedia.org/wiki/Peter_Hjelm"
    title: "Peter Hjelm"
    type:  "WIKIPEDIA"
  - url: "https://pt.wikipedia.org/wiki/Peter_Jacob_Hjelm"
    title: "Peter Jacob Hjelm"
    type:  "WIKIPEDIA"
  - url: "https://ro.wikipedia.org/wiki/Peter_Jacob_Hjelm"
    title: "Peter Jacob Hjelm"
    type:  "WIKIPEDIA"
  - url: "https://sk.wikipedia.org/wiki/Peter_Jacob_Hjelm"
    title: "Peter Jacob Hjelm"
    type:  "WIKIPEDIA"
  - url: "https://sv.wikipedia.org/wiki/Peter_Jacob_Hjelm"
    title: "Peter Jacob Hjelm"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q902589"
    title: "Wikidata"
    type:  "WIKIDATA"

# bio (long form, separated for readability)
bio: |
  Imported from discovery source: wikidata-dump