지글러-나타 촉매법에 의한 폴리에틸렌 합성

세계에서 가장 많이 생산되는 플라스틱 소재

Materials Science & Polymers Global Industrial Scale $140 billion

개요

Polyethylene (PE) is the most produced plastic globally, manufactured through catalytic polymerization of ethylene. Three major grades exist: HDPE (high density, linear chains via Ziegler-Natta or chromium catalysts), LDPE (low density, branched chains via free-radical high-pressure process), and LLDPE (linear low density, gas-phase with metallocene catalysts). The development of Ziegler-Natta catalysts earned Karl Ziegler and Giulio Natta the 1963 Nobel Prize in Chemistry.

화학 공정

For HDPE: ethylene is polymerized at 80-150 degrees C and 10-80 bar using Ziegler-Natta (TiCl4/MgCl2 + AlEt3) or Phillips (CrO3/SiO2) catalysts in gas-phase fluidized bed or slurry reactors. For LDPE: ethylene is polymerized at 150-300 degrees C and 1000-3000 bar using peroxide initiators in tubular or autoclave reactors.

nCH2=CH2 ->[catalyst] -(CH2-CH2)n- (addition polymerization, DeltaH = -93.6 kJ/mol)

원자재

  • Ethylene (C2H4) — Steam cracking of hydrocarbons (Monomer)
  • 1-Hexene or 1-butene — Oligomerization of ethylene (Comonomer (for LLDPE))
  • Ziegler-Natta catalyst (TiCl4/MgCl2) — Chemical synthesis (Polymerization catalyst)

최종 제품

  • Polyethylene resin pellets — Films, bottles, pipes, containers, toys (HDPE (0.941-0.965 g/cm3), LDPE (0.910-0.940 g/cm3))
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Environmental Impact

Polyethylene is a major contributor to plastic pollution in oceans and landfills. Only about 30% is recycled globally. Microplastic formation from PE degradation is an emerging concern. Production from fossil ethylene contributes to CO2 emissions, though bio-based PE from sugarcane ethanol is now commercially available.

안전 고려사항

최근 혁신

Chemical recycling via pyrolysis converts PE waste back to monomers.
Bio-based polyethylene from sugarcane ethanol (Braskem I'm green PE) provides a renewable alternative.
Single-site metallocene catalysts enable precise control of molecular architecture.

생산 규모

110000000

톤/년

$140 billion

시장 가치

더 보기: Materials Science & Polymers

폴리아크릴로나이트릴로부터 탄소 섬유 제조

Commercial Production

유리 섬유 복합재료 제조

Global Industrial Scale

황 가교결합에 의한 고무 가황

Global Industrial Scale

중축합에 의한 나일론 6,6 생산

Global Industrial Scale

비스페놀 A로부터 에폭시 수지 생산

Global Industrial Scale

케블러(폴리-p-페닐렌 테레프탈아마이드) 섬유 생산

Commercial Production

직접법에 의한 실리콘(PDMS) 제조

Global Industrial Scale

Frequently Asked Questions

What industry uses 지글러-나타 촉매법에 의한 폴리에틸렌 합성?
지글러-나타 촉매법에 의한 폴리에틸렌 합성 is used in the materials science & polymers sector at global industrial scale scale.
What process is involved in 지글러-나타 촉매법에 의한 폴리에틸렌 합성?
For HDPE: ethylene is polymerized at 80-150 degrees C and 10-80 bar using Ziegler-Natta (TiCl4/MgCl2 + AlEt3) or Phillips (CrO3/SiO2) catalysts in gas-phase fluidized bed or slurry reactors. For LDPE: ethylene is polymerized at 150-300 degrees C and 1000-3000 bar using peroxide initiators in tubular
What is the economic significance of 지글러-나타 촉매법에 의한 폴리에틸렌 합성?
지글러-나타 촉매법에 의한 폴리에틸렌 합성 has a market value of $140 billion and annual production of 110,000,000 tons.
What is the environmental impact of 지글러-나타 촉매법에 의한 폴리에틸렌 합성?
Polyethylene is a major contributor to plastic pollution in oceans and landfills. Only about 30% is recycled globally. Microplastic formation from PE degradation is an emerging concern. Production from fossil ethylene contributes to CO2 emissions, though bio-based PE from sugarcane ethanol is now co
What raw materials are used in 지글러-나타 촉매법에 의한 폴리에틸렌 합성?
The main raw materials include: Ethylene (C2H4), 1-Hexene or 1-butene, Ziegler-Natta catalyst (TiCl4/MgCl2).