Dimethyl Carbonate (DMC): Nɔ ko ni yɔɔ gbeyei fioo, ni tsuɔ nii jogbaŋŋ kɛha tsofafeemɔ ni yaa nɔ daa

Gbɔmɔtsoŋ tsofafeemɔ nibii kɛ Molekulai ahe nilee

Sɛɛnamɔi ni Yɔɔ Gbɛjianɔtoo He
140 mg/kg lɛ, DMC lɛ yɛ shweshweeshwe kwraa fe blema tsofai ni haa mɔ he jɔɔ lɛ (tamɔ, dimethyl sulfate, LD50 = 140 mg/kg), ni ekɛ EU REACH mla ni kɔɔ nibii ni fiteɔ nii ni ehiii shi lɛ kpãa gbee.
Hetoohamɔ:
Methylation: Methoxy kuu lɛ (−OCH3 ) haa methyl kuu lɛ yaa he kroko ni yɔɔ shweshweeshwe, ni ekɛ tsofai fɔji yeɔ najiaŋ.
Kabɔnilɛshin: Kabɔnilɛ kuu lɛ (−CO−) haa ester tsakemɔ kɛ aminolysis yaa hiɛ, ni eyeɔ ebuaa polycarbonates ni bɛ fɔsjin lɛ.
Nɔ ni haa nu mli shwieɔ shi: Kɛ dielectric ni tsakeee lɛ ji 3.1 lɛ, DMC kɛ dãai, ketones, kɛ esters futuɔ jogbaŋŋ, yɛ be mli ni ekɛ nu mli fã ko shwieɔ shi (1.6 g/100 mL yɛ 20°C).

Gbɔmɔtsoŋ Saji Titrii
DMC lɛ mli fɛ̃i ni ji 90.5°C lɛ haa efeɔ nɔ ni sa kɛha hulutsoo be mli nifeemɔi kɛ tsɔne ni haa nu mli tseɔ lɛ sɛɛkuu, ni eheɔ hewalɛ ni baa shi 30% fe nifeemɔi ni damɔ benzene nɔ lɛ. Ehewalɛ ni baa shi (0.664 mPa・s) lɛ haa nu lɛ hoɔ yɛ nitsumɔi tamɔ lithium batiri electrolytes mli, yɛ be mli ni hulutsoo enthalpy ni ji 363 kJ/kg lɛ haa hulutsoo be ni sa kɛha nibii ni akɛwoɔ mli kɛ nibii ni akɛkpɛtɛɔ he lɛ feɔ mlɛo. Kaadi: Etswaa (3.1–20.5% vol) lɛ biɔ 防爆 (ni tswaaa) kɔɔyɔɔ gbɛjianɔtoi.

Nitsumɔhei Srɔtoi ni Akɛtsuɔ Nii

Green Synthesis Nibii Heei
Polikabɔnet (PC) feemɔ:
DMC kɛ bisphenol A (BPA) tsuɔ nii kɛtsɔɔ nɔ ni akɛwoɔ mli lɛ nɔ koni ekɛfee diphenyl carbonate (DPC), ni no sɛɛ lɛ afee lɛ PC. Gbɛ nɛɛ haa atom lɛ tsuɔ nii jogbaŋŋ kɛyashɛɔ 92% (kɛtoɔ 65% kɛha blema phosgene gbɛi lɛ) ni ejieɔ nibii ni yɔɔ gbeyei ni jɛɔ mli baa lɛ.
Nibii ni Akɛtsuɔ Nii: PC resins ni jɛɔ mli baa lɛ haa ≥90% kane tsɔɔ mli, hulutsoo ni tsɔɔ 135°C, kɛ 10% hewalɛ ni fe PC ni jɛ phosgene mli, ni akɛtsuɔ nii yɛ tsɔnei ahe tsɔnei kɛ tsɔnei ahe kanei ahe tsɔnei amli lɛ.
Tsofai kɛ okwaayeli tsofai:
Nibii ni haa mɔ tsui nyɔɔ emli: Ekɛ dimethyl sulfate yeɔ najiaŋ yɛ tsofai ni haa mɔ tsui nyɔɔ emli (tamɔ, nifedipine) kɛ tsofai ni haa mɔ tsui nyɔɔ emli (tamɔ, sertraline) lɛ afeemɔ mli, ni ehaa yibiiwoo lɛ yaa hiɛ 15–20% kɛ methanol akɛ nɔ pɛ ni jɛɔ mli baa.
Carbonylation Nitsumɔi: Akɛtsuɔ nii yɛ carbaryl (tsofa ni gbeɔ kooloi) feemɔ mli koni HCl akafite, ni ehaa shika ni akɛtsuɔ nii lɛ baa shi 25%.

Hewalɛ Hee kɛ Nibii
Lithium batri mli la ni haa hulu kpɛɔ:
Kɛ akɛ ethylene carbonate (EC) kɛ ethyl methyl carbonate (EMC) futu mli lɛ, DMC lɛ feɔ tsɔne ni haa hulu kpɛɔ ni haa hulutsoo lɛ yaa hiɛ ni shɛɔ 1.2 mS/cm. Enɛ haa batri lɛ wala be yaa hiɛ kɛyashɛɔ shii 1,200 (hewalɛ ni akɛhiɛɔ mli ≥85%), ni ekɛ EU Batri Mla (2023/0051) lɛ kpãa gbee kɛha tsofa fɔŋ ni baa shi. Akɛtsu nii momo yɛ Tesla 4680 batri feemɔ mli.
Nibii ni wala yɔɔ mli ni fiteɔ:
Kɛ akɛ propylene oxide wo mli koni efee polypropylene carbonate (PPC), nibii ni damɔ DMC nɔ lɛ shwieɔ 40% CO2 ni efiteɔ yɛ nyɔji 6–12 mli, ni etsuɔ ​​plastic nibii ni akɛtsuɔ nii shikome kɛ okwaayeli sinii amli lɛ he nii.

Nibii ni akɛwoɔ mli kɛ nibii ni akɛkpɛtɛɔ he
Nibii ni haa mɔ he jɔɔ lɛ: Ekɛ toluene/xylene yeɔ najiaŋ yɛ tsɔnei ahe OEM pɛntei amli, ni enáa VOC ni yɔɔ mli lɛ ≤50 g/L (ni baa shi kwraa fe GB 24409-2020 mlai lɛ). Akɛ be ni akɛgbiɔ nii lɛ baa shi kɛyaa ŋmɛlɛtswai 2 nɔ, ni sini lɛ mli walɛ shɛɔ 2H.
Nibii ni akɛwoɔ tsɔne mli ni akɛwoɔ tsɔne mli lɛ mli lɛ, akɛtsuɔ nii yɛ tsɔnei ni akɛwoɔ shĩa mli lɛ amli, ni tsɔne ni akɛwoɔ tsɔne mli ni akɛ DMC tsuɔ nii yɛ mli lɛ yɛ tsɔne ni akɛwoɔ tsɔne mli lɛ ni bɛ tsɔne mli ≤0.01 mg/m3 (E0 grade), ni eyeɔ ebuaa IKEA ni ekɛ tsɔne ni akɛwoɔ tsɔne mli lɛ baa shi kɛ tɔni 500+ daa afi.

Sɛɛnamɔi ni yɔɔ shihilɛ mli kɛ ŋaa gbɛ nɔ naagbai

Nɔ ni He Hiaa yɛ Shihilɛ He
Atomic Economy: Nibii ni jɛɔ mli baa tamɔ methanol lɛ abaanyɛ atsake kɛtsɔ distillation nɔ, ni ebaa COD jatsu ni yɔɔ nu fɔŋ mli lɛ shi kɛ 70% kɛ akɛto blema nifeemɔi ahe.
Carbon Capture: PC ni jeee phosgene lɛ sɛɛkuu lɛ shwieɔ carbon najiaŋdamɔlɔ lɛ nɔ kɛ 45%, yɛ be mli ni DMC tɔn fɛɛ tɔn ni ajieɔ lɛ yeɔ CO2 tɔn 0.6 kɛjɛɔ tsɔne ni akɛwoɔ la mli lɛ mli, ni eyeɔ ebuaa CCU (carbon ni anáa kɛ nitsumɔ).

Nɔ Heei Afeemɔ Husui
Shika ni Akɛbaa Shi: Gbɛ ni atsɔɔ nɔ afeɔ CO2 tɛ̃ɛ (ni akɛ methanol, CO2, kɛ Pd-based catalysts tsuɔ nii) lɛ shwieɔ nibii ni akɛtsuɔ nii lɛ ahe nyɔmɔwoo nɔ kɛyashɛɔ 30%, ni Sinopec tsɔne ni akɛkwɛɔ nibii amli lɛ nine shɛɔ kiloton-scale nitsumɔ nɔ.
Ultra-Purity Solutions: Membrane mligbalamɔ-nibii ni ajieɔ kɛjɛɔ mli lɛ he ŋaalee lɛ haa tsɔne ni akɛtsuɔ nii yɛ tsɔne mli lɛ mli DMC ni dade ions ≤1 ppb kɛ hetsemɔ ≥99.999%, ni eshɛɔ SEMI C87 mlai ni kɔɔ semiconductor mli hetsemɔ he lɛ he.
Nibii ni Akɛtsuɔ Nii ni Yɔɔ Shweshweeshwe: DMC ni akɛwoɔ mli bibioo (ni akɛ SiO2 nanoshells ewo mli) lɛ woɔ la ni tsoɔ lɛ nɔ kɛyashɛɔ 60°C, ni TÜV Rheinland etsɔɔ akɛ eyɛ shweshweeshwe yɛ gbɛfaa mli.

Nibii pɔtɛɛ

Wolo ni Kwɛɔ Nɔ ni Hi jogbaŋŋ lɛ Nɔ

Mɛni Hewɔ Esa akɛ Wɔhala Wɔ DMC lɛ?

Hewalɛi Titrii Ejwɛ
Hetsemɔ He Nɔmimaa:
100 ppm kɛ methanol ≤100 ppm. Shihilɛ: Mɔ ko ni heɔ batri ni kɛ wɔ DMC lɛ tsuɔ nii lɛ ná 98.7% klɛŋklɛŋ charge-discharge nitsumɔ (nitsumɔhe lɛ mlijaa 95%).
Hewalɛ ni akɛfeɔ mɔ diɛŋtsɛ:
Nibii ni afee lɛ pɛpɛɛpɛ kɛha acid jara (≤0.001 mgKOH/g), ŋmɔtɔ (≤50 ppm), kɛ ŋmɔtɔ (≤5 ppm). Akɛ nɔkwɛmɔnɔ lɛ, wɔfee DMC (0.0005 mgKOH/g) ni haa mɔ he jɔɔ lɛ waa kɛha tsofafeemɔ ni haa mɔ he jɔɔ lɛ.
Shikayeli he nɔkwɛmɔnɔ:
Akɛ methanol mli nibii ni jɛɔ mli baa lɛ tsuɔ nii ekoŋŋ kɛfeɔ syngas (CO+H2) kɛha DMC feemɔ, ni enáa nibii ni tsuɔ nii jogbaŋŋ 95% ni ehaa CO2 ni ajieɔ lɛ baa shi kɛ tɔn 3 yɛ DMC tɔn kome mli. Akɛ CO2 ni mli wa waa tsuɔ jwɛi ni akɛwoɔ kotoku mli lɛ he nii kɛhaa 95% ni akɛtsuɔ nii ekoŋŋ.
Jeŋ muu fɛɛ mlai ahe nitsumɔ:
1628-2020, ASTM D7056, kɛ JIS K 1551 lɛ kpãa gbee.

Gbɛgbamɔ Nitsumɔ ni Hiɔ Shi Daa

Dimethyl Carbonate miitsake nitsumɔhei kɛtsɔ "ebɛ awui, etsuɔ ​​nii jogbaŋŋ, ni anyɛɔ atsakeɔ" sui anɔ. Wɔkɛ wɔhe woɔ gbɛjianɔtoi heei kɛ low-carbon tsabaai amli, ni wɔkɛ yelikɛbuamɔ ni jɛɔ naagbee kɛyaa naagbee haa kɛjɛɔ nibii ni akɛtsuɔ nii kɛyaa nitsumɔi amli. Wɔ DMC lɛ halamɔ tsɔɔ akɛ wɔkɛ shihilɛ ni yaa nɔ daa lɛ baatsu nii—he ni nu fɛɛ nu ni baa lɛ haa mujiwoo baa shi, hewalɛ ni akɛtsuɔ nii jogbaŋŋ, kɛ ŋaalee mli hiɛyaa, ni akɛfeɔ ekome kɛmaa tsofafeemɔ ni yɔɔ ŋmɔlɔŋmɔlɔ wɔsɛɛ be.