GAZ SEZGIR MATERIALLAR OLISH VA ULAR ASOSIDA METANNI ANIQLOVCHI SENSOR ISHLAB CHIQISH
1 O‘ZBEKISTON RESPUBLIKASI OLIY VA O‘RTA MAXSUS TA’LIM VAZIRLIGI SHAROF RASHIDOV NOMIDAGI SAMARQAND DAVLAT UNIVERSITETI Qo`lyozma huquqida UDK: 54 :662.763 ERD A NOV YULDOSH TOSHTEMIROVICHNING GAZ SEZGIR MATERIALLAR OLISH V A ULAR ASOSIDA METANNI ANIQLOVCHI SENSOR ISHLAB CHIQISH 5A140501 -Noorganik kimyo Magistr akademik darajasini olish uchun yozilgan dissertasiya Ish ko’rib chiqildi va ximoyaga qo’yildi Ilmiy r ahbar: k.f. d., dots. I.E.Abdurahmonov N oorganik kimyo va materialshunoslik kafedrasi mudiri : “____ ” ___________ 20 22 yil k.f. d., dots. I.E.Abdurahmonov SAMARQAND – 20 22
2 ANNOTATSIYA Gaz sezgir materiallar olish v a ular asosida metanni aniqlovchi sensor ishlab chiqish mavzusidagi magi strlik dissertatsiya annotatsiyasi Chiqindi gazlari bilan atmosferaga katta miqdordagi zaharli va portlovchan bi rikmalar tashlanadi. Gaz aralashmalari tarkibidagi doimiy analitik nazoratni talab etuvchi portlovchan komponentlardan biri metan. Bu birikmaning mikrokonsentratsiyasini nazorat qilish muammosi uni aniqlashning yuqori sezgir, selektiv, ekspress, avtomatik uslub va asboblarini yaratish bilan chambarchas bog’liq. Mavzuning dolzarbligi atmosfera tarkibini ekologik monitoringiga qo’yiladigan talabning oshishi hamda gaz sezgir sensorlarni qo’llanilish sohasi ko’plab texnologik va ekologik sohalarni qamrab olga nligi bilan belgilanadi. ANNOTATION Abstract of the master's dissertation on the production of gas -sensitive materials and the development of sensors for the detection of methane on their basis Exhaust gases release large amounts of toxic and explosive compounds into the atmosphere. Methane is one of the explosive components in gas mixtures that requires constant analytical monitoring. The problem of controlling the microconcentration of this com pound is closely related to the development of highly sensitive, selective, express, automatic methods and tools for its detection. The relevance of the topic is determined by the growing demand for environmental monitoring of atmospheric composition and t he fact that the field of application of gas -sensitive sensors covers many technological and environmental areas.
3 MUNDARIJA KIRISH ........... ................................................................................................ 5 Bob 1. GAZ ARALA SH MALAR I TARKIBIDAN METAN NI ANIQLA SHNING ZAMONAVIY USULLARI VA ASBOBLARI (adabiyot lar sharhi ............................................... ......................................... .. 11 1.1.Y onuvchan gazlarning aniqlashni optik usullari va asboblari.......... ......... 12 1.2. G az lar analizining t ermo kondu ktometri k usullar i va asbob lari … … … … 14 1.3. G az lar aralashmasi tarkibini nazorat qilishning e le ktro kimyoviy usullari va analizatorlari............................................. ...................................... 15 1.4. Gaz aralashmalarini nazorat qilishning termokatalitik usuli..... ............... 16 1.5. Metanni (tabiiy gazni) aniqlovchi yarimo‘tkazgichli gaz s ensorlari........ 22 1.5.1. Y onuvchan gazlarning metall oksidlari asosidagi yarimo‘tkazgichli sensorlari.......................................................................... ................................ 23 1.6. Birinchi bob bo‘yicha xulosalar 27 2-Bob. METANNI ANIQLOVCHI YARIMO‘TKAZGICHLI SENSORLAR ISHLAB CHIQISH ............................................ .................. 28 2.1.Tabiiy gaz va metanni aniqlovchi yarimo‘tkazgichli sensorlar uchun metall oksidlari asosida gaz sezgir nanokompozit plyonkalar sintezi 28 2.2. Metanni aniqlovchi yarimo ‘tkazgichli sensorni ishlab chiqish ........... ..... 37 2.3. Y arimo‘tkazgichli metanni aniqlovchi sensorining metrologik ko‘rsatgichlarlariga turli omillar ta’sirini o‘rganish.......................... .............. 39 2.3.1. Y arimo‘tkaz gichli metan ni aniqlovchi sensor ning sezgirligiga haroratn ing ta’siri ..................................................................................... ........ 39 3-Bob. METANNI ANIQLOVCHI YARIMO‘TKAZGICHLI SENSORLAR METROLOGIK TAVSIFLARINI O‘RGANISH ……… . 42 3.1 . Metan va tabiiy gazni aniqlashda yarimo‘tkazgichl i sensor signalini o‘zgarish dinamikasini tekshirish............................................ 42 3.2 . Y arimo‘tkazgich li sensorning metanga nisbatan sezuvchanligi ....... 44 3.3 . Metanni aniqlovchi yarimo‘tkazgichli sensor signalining konsentratsiyag a bog‘liqligi.......................................................................... .. 46
4 3.4 . Y arimo‘tkazgichli sensorni ishlash resursi va signal ini ng barqarorligini tekshirish ........................................................................... 48 3.5 . Metanni aniql ovchi yarimo‘tkazgich li sensorning selektiv ligi ni aniqlash........................................................................................................... . 50 Uchunchi bob bo‘yicha xulosalar.............................. ................................. ..... 52 XULOSA........................................................................................................ . 53 Foydalanilgan adabiyotlar .......................................................................... ...... 54 Ilova……………………………………………………………………… … . 68