QUYOSH TERMOKIMYOVIY SIKLIDA ISHTIROK ETUVCHI METALL OKSIDLARNING GIBBS ERKENERGIYASI TAHLILI VA UNING VODOROD ISHLAB CHIQISHDA AHAMIYATI
Keywords:
Quyosh termokimyoviy jarayon, Metal oksidlar, CeO2, ZnO, Redoks sikllari, Gibbs energiyasi.Abstract
Quyosh termokimyoviy jarayonlar samarali quyosh yoqilg‘isini ishlab chiqarishda muhim rol o‘ynaydi, bunda metall oksidlar asosidagi redoks sikllari katta ahamiyatga ega. Ushbu tadqiqotda CeO₂ ning ikki bosqichli termokimyoviy reaksiyalarda ZnO ga nisbatan afzalliklari o‘rganildi, ayniqsa kamaytirish harorati, oksidlanish kinetikasi, barqarorlik va kislorod saqlash qobiliyati bo‘yicha. CeO₂, pastroq kamaytirish harorati (~800°C), tezroq oksidlanish kinetikasi va sinterlashga chidamliligi bilan yuqori samaradorlikni ko‘rsatadi. Biroq, bu afzalliklarga qaramay, katalitik faollikni oshirish va redoks sikl barqarorligini yaxshilash zarurati mavjud. CeO₂ ning samaradorligini maksimal darajada oshirish va uning cheklovlarini bartaraf etish uchun yanada chuqurroq tadqiqotlar o‘tkazish zarur. Shuningdek, MoO₂/Mo va SnO₂/Sn kabi metall-oksid tizimlari yuqori haroratlarni talab qilsa-da, quyosh yoqilg‘isini ishlab chiqarishda va amalga oshirishda istiqbolli potentsialga ega. Bu tizimlar bo‘yicha Gibbs erkenergiyasi tahlili va tajriba natijalarining taqqoslanishi ularning amalga oshirilishi va samaradorligi haqida batafsil ma'lumot beradi.
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