{"id":5282,"date":"2026-06-24T14:33:23","date_gmt":"2026-06-24T05:33:23","guid":{"rendered":"https:\/\/agus.co.jp\/en\/?p=5282"},"modified":"2026-06-24T14:33:24","modified_gmt":"2026-06-24T05:33:24","slug":"what-is-a-platinum-pt-catalyst-what-is-it-used-for-a-simple-explanation-with-familiar-examples","status":"publish","type":"post","link":"https:\/\/agus.co.jp\/en\/?p=5282","title":{"rendered":"What is a platinum (Pt) catalyst? What is it used for? A simple explanation with familiar examples."},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

‘What is a platinum catalyst, after all?’ Are they around us?’<\/p>\n\n\n\n

We have written this article to answer these questions.<\/p>\n\n\n\n

In this article, we will explain the platinum catalyst in a biting way, followed by a simple understand explanation with familiar examples.<\/p>\n\n\n\n

By the time you finish reading this article, we hope you\u2019ll have a good understanding of platinum catalysts.<\/p>\n\n\n\n

Let’s take a quick look.<\/p>\n\n\n\n

<\/div>\n\n\n\n

What is a platinum (Pt) catalyst?<\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n

<\/p>\n\n\n\n

Platinum catalyst is the name given to the use of platinum as a catalyst.<\/p>\n\n\n\n

It has a catalytic action that activates oxygen and hydrogen, and can purify toxic gases such as carbon monoxide and hydrocarbons into harmless gases through oxidation and reduction reactions.<\/p>\n\n\n\n

<\/p>\n\n\n\n

Platinum itself is less reactive and less likely to change.<\/p>\n\n\n\n

<\/p>\n\n\n\n

However, it has a curious catalytic performance: it reacts with everything around it.<\/p>\n\n\n\n

<\/p>\n\n\n\n

We will now discuss in the next section where platinum catalysts are used.<\/p>\n\n\n\n

<\/div>\n\n\n\n

How Platinum is used in society.<\/h2>\n\n\n\n

<\/p>\n\n\n\n

In fact, platinum catalysts are all around us.<\/p>\n\n\n\n

<\/p>\n\n\n\n

You may have one in your home.<\/p>\n\n\n\n

<\/p>\n\n\n\n

Platinum catalysts are used in ‘Hitachi\u2019s refrigerators’, ‘gas purification in cars’ and ‘Hakkin hand warmers’.<\/p>\n\n\n\n

<\/div>\n\n\n\n

Platinum is useful \u201cHitachi fridges\u201d<\/h3>\n\n\n\n
\"\"
Source\uff1a\u7279\u9577\uff1a\u771f\u7a7a\u30c1\u30eb\u30c9 \uff1a \u51b7\u8535\u5eab \uff1a \u65e5\u7acb\u306e\u5bb6\u96fb\u54c1<\/a><\/figcaption><\/figure>\n\n\n\n

Platinum catalysts are also used in some refrigerators made by Hitachi.<\/p>\n\n\n\n

<\/p>\n\n\n\n

Previously, photocatalysts were used, but now platinum catalysts are used to break down ethylene gas and odor components into carbon dioxide gas and molecules, allowing vegetables to be put to sleep.<\/p>\n\n\n\n

<\/p>\n\n\n\n

This high freshness preservation locks in moisture and prevents drying, which means that even vegetables that have been stored for a long time can still taste good.<\/p>\n\n\n\n

\"\"
Source\uff1a\u7279\u9577\uff1a\u771f\u7a7a\u30c1\u30eb\u30c9 \uff1a \u51b7\u8535\u5eab \uff1a \u65e5\u7acb\u306e\u5bb6\u96fb\u54c1<\/a><\/figcaption><\/figure>\n\n\n\n

<\/p>\n\n\n\n

<\/div>\n\n\n\n

Platinum is useful \u201cAutomotive gas purification (autocatalysts).\u201d<\/h3>\n\n\n\n
\"\"<\/figure>\n\n\n\n

<\/p>\n\n\n\n

Much of platinum is used in autocatalysts.<\/p>\n\n\n\n

<\/p>\n\n\n\n

Specifically, it is used to clean up toxic gases.<\/p>\n\n\n\n

<\/p>\n\n\n\n

Rhodium, platinum and palladium are used in catalytic converters, which are parts of the car, to clean toxic gases in the exhaust gas using a catalytic reaction.<\/p>\n\n\n\n

<\/p>\n\n\n\n

The specific processes are as follows.<\/p>\n\n\n\n

<\/p>\n\n\n\n

    \n
  • HC (hydrocarbons) \u2192 oxidation \u2192 H2O + CO2 (water and carbon dioxide)<\/li>\n\n\n\n
  • CO (carbon monoxide) \u2192 oxidation \u2192 CO2 (carbon dioxide)<\/li>\n\n\n\n
  • NOx (nitrogen oxides) \u2192 reduction \u2192 N2 + O2 (nitrogen, oxygen)<\/li>\n<\/ul>\n\n\n\n

    <\/p>\n\n\n\n

    Platinum was originally used in diesel vehicles (e.g. buses), while palladium was used in petrol vehicles.<\/p>\n\n\n\n

    <\/p>\n\n\n\n

    More details will be given later in the section on the history of platinum catalysis.<\/p>\n\n\n\n

    <\/div>\n\n\n\n

    Platinum is useful \u201cHakkin hand warmers\u201d<\/h3>\n\n\n\n
    \"\"<\/figure>\n\n\n\n

    <\/p>\n\n\n\n

    Platinum catalysts are also used in Hakkin hand warmers.<\/p>\n\n\n\n

    <\/p>\n\n\n\n

    Hakkin hand warmers use a chemical reaction\u2014in which vaporized benzene (hydrogen) comes into contact with platinum to generate heat\u2014to provide warmth, and they are popular among hikers and others.<\/p>\n\n\n\n

    <\/p>\n\n\n\n

    While most warmers use an oxidation reaction of iron, Hakkin hand warmers use a platinum-catalysed reaction, which is environmentally friendly and has a longer duration of 18-24 hours.<\/p>\n\n\n\n

    <\/p>\n\n\n\n

    It is recommended for skiing and winter outdoor activities.<\/p>\n\n\n\n

    <\/div>\n\n\n\n

    COLUMN: Platinum catalysts and automotive history.<\/h2>\n\n\n\n
    \"\"<\/figure>\n\n\n\n

    <\/p>\n\n\n\n

    Platinum catalysts were originally used in many diesel vehicles.<\/p>\n\n\n\n

    <\/p>\n\n\n\n

    Palladium catalysts are used in petrol vehicles.<\/p>\n\n\n\n

    <\/p>\n\n\n\n

    The monetary value behind this was that palladium was cheaper than platinum.<\/p>\n\n\n\n

    <\/p>\n\n\n\n

    Although palladium has lower performance as a catalyst, it is sufficient for petrol engines.<\/p>\n\n\n\n

    <\/p>\n\n\n\n

    The price of palladium was cheap at the time, but now the price has skyrocketed due to increased demand for petrol-powered vehicles.<\/p>\n\n\n\n

    <\/p>\n\n\n\n

    It is now more expensive than platinum and gold.<\/p>\n\n\n\n

    <\/p>\n\n\n\n

    For this reason, many platinum catalysts are now used in petrol vehicles.<\/p>\n\n\n\n

    <\/p>\n\n\n\n

    Furthermore, the automotive industry and platinum catalysts are inextricably linked, as platinum is also used as a catalyst in fuel cell vehicles that use hydrogen as their energy source.<\/p>\n\n\n\n

    <\/div>\n\n\n\n

    Summary<\/h2>\n\n\n\n

    In this article, we explained the platinum catalyst.<\/p>\n\n\n\n

    <\/p>\n\n\n\n

    Let’s look back at the last point.<\/p>\n\n\n\n

    <\/p>\n\n\n\n

    The key points of this article.<\/p>\n\n\n\n

    <\/p>\n\n\n\n

    Platinum catalysts catalyse the activation of oxygen and hydrogen.<\/p>\n\n\n\n

    <\/p>\n\n\n\n

    Platinum is used in ‘Hitachi refrigerators’, ‘gas purification for cars’, ‘Hakkin hand warmers’, etc.<\/p>\n\n\n\n

    <\/p>\n\n\n\n

    Automobiles and platinum catalysts continue to be used from diesel to the latest fuel cell vehicles.<\/p>\n\n\n\n

    <\/p>\n","protected":false},"excerpt":{"rendered":"

    ‘What is a platinum catalyst, after all?’ Are they around us?&#[\u3082\u3063\u3068\u8aad\u307e\u305b\u3066\u301c]<\/p>\n","protected":false},"author":1,"featured_media":5283,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[58],"tags":[],"class_list":["post-5282","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technology"],"acf":[],"yoast_head":"\nWhat is a platinum (Pt) catalyst? What is it used for? A simple explanation with familiar examples. | SUGA Co., Ltd.<\/title>\n<meta name=\"description\" content=\"'What is a platinum catalyst, after all?' Are they around us?' 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