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Item type: Item , MIXED CATALYSTS FOR THE PRODUCTION OF HIGH MOLECULAR WEIGHT SYNTHETIC HYDROCARBONS FROM PENTANE TO NONADECANE FROM SYNTHESIS GAS(JOURNAL OF MULTIDISCIPLINARY RESEARCH, 2025-04) Koybakarob Oybek ErgashovichIt can also enter into chemical interaction with the carrier metal [28, 29, 45-46]. The mixture of carbon dioxide and hydrogen, which performs the functions of hydrocarbon synthesis and hydrorefining, allows obtaining the simplest type of catalysts, which are mixed powders of catalyst and zeolite for the synthesis of hydrocarbons from high molecular weight synthetic pentane to nonadecaneItem type: Item , GENERAL INFORMATION ABOUT THE PROCESS OF SYNTHESIZING HYDROCARBONS FROM CO2 AND H2(JOURNAL OF MULTIDISCIPLINARY RESEARCH, 2025-04) Koybakarob Oybek ErgashovichThe process of catalytic synthesis of hydrocarbons from syngas to high molecular weight synthetic pentane to nonadecane is a strongly exothermic reaction. Its thermal effect is equal to 41 kcal/mol, activation energy is equal to 24 kcal/mol [1]. Thermodynamic calculations [1 3] show that at pressures of 1–100 atm and temperatures of 20–700°C, the formation of saturated hydrocarbons, especially methane, is likely. At 1 atm, the upper temperature limit for the formation of hydrocarbons ranging from high molecular weight synthetic pentane to nonadecane is 400–500°C.Item type: Item , COBALT-BASED CATALYSTS(JOURNAL OF MULTIDISCIPLINARY RESEARCH, 2025-04) Koybakarob Oybek ErgashovichAmong the known catalysts for the synthesis of high molecular weight synthetic hydrocarbons from pentane to nonadecane from a mixture of carbon monoxide and hydrogen, cobalt-based catalysts are the most promising. They are characterized by [47, 48]: operation at relatively low temperatures; active influence on the preferential formation of n-saturated hydrocarbons; and low activity in the formation of water gasItem type: Item , METHODS OF CATALYTIC CONVERSION OF METHANE, CURRENT STATUS AND PROSPECTS(JOURNAL OF MULTIDISCIPLINARY RESEARCH, 2025-02) Koybaqarob Oybek ErgashovichCurrently, the world's natural gas reserves are 144 trillion. m3, and in Uzbekistan - 2 trillion. m3. Currently, many important products in industry (chlorine-containing solvents, carbon sulfide, cyanide acid, etc.) are synthesized from methane. Catalytic conversion of methane with water vapor is the main method for obtaining hydrogen and synthesis gas. The shortage of oil and oil products requires the creation of alternative methods for obtaining motor fuels, lower olefins and aromatic hydrocarbons. As is known, the synthesis of substances that can replace oil products from natural and associated gases, low molecular alcohols, coal gas and biogas is environmentally and economically feasible. At a time when oil reserves are decreasing, natural gas is of great interest as an alternative fuel in petrochemical production. The current traditional method of converting natural gas into liquid fuels is multi-stage and occurs at high temperatures and high pressures. Currently, promising methods for processing natural gas are its catalytic aromatization and oxycondensation reactions. These processes occur in one stage and at normal atmospheric pressure.Item type: Item , SOME TECHNOLOGICAL PROBLEMS OF CATALYTIC CONVERSION OF METHANE WITH CARBON DIOXIDE IN THE GAS PHASE WITH THE PARTICIPATION OF CATALYSTS(JOURNAL OF MULTIDISCIPLINARY RESEARCH, 2025-02) Koybakarob Oybek ErgashovichAs mentioned above, the industrial application of the catalytic conversion of methane in the gas phase with carbon dioxide catalysts is hindered by the fact that the process is highly exothermic., in other words, high energy consumption; secondly, very low stability of the catalyst to coking. The development of new catalysts continues as part of the fight against coking. We have already mentioned the work of the company "Topsoe" in the field of reducing the toxicity and coking of nickel catalystsItem type: Item , HISTORY OF THE DEVELOPMENT AND TRANSFORMATION OF METHANE INTO CARBON DIOXIDE(JOURNAL OF MULTIDISCIPLINARY RESEARCH, 2025-02) Koybakarob Oybek ErgashovichThe first work on the production of synthesis gas by converting methane to carbon dioxide was published in 1928 [5]. In the 1990s, research on the conversion of carbon dioxide to methane was focused on the production of synthesis gas in various H2/CO ratios for the synthesis of hydrocarbons and petroleum products [18]. The main goal of the research of the NCM was to develop active catalysts that can work for a long time without renewal. In [16, 19], the catalytic activity of some metals (Cu, Fe, Co, Ni, Ru, Ru, Rh, Ir or Pt) was increased by using additives (Al2O3, SiC>2, TiCl, MgO, C, ZnO,SiC,BaO,ZrCl,GeO2 or zeolites) [5]. Precious metal catalysts are more resistant to coke production, but due to their high cost and limited efficiency, they are used for economical purposes.Item type: Item , CHROMATOGRAPHIC ANALYSIS OF PRODUCTS OF THE STEAM-CARBONATE CONVERSION REACTION OF METHANE(JOURNAL OF MULTIDISCIPLINARY RESEARCH, 2025-02) Koybaqarob Oybek ErgashovichThe catalytic carbonation reaction of methane with carbonic anhydride in the gas phase in the presence of catalysts was carried out in a flow reactor (diameter 2 cm and length 20 cm), at normal atmospheric pressure, a volume flow rate of 1000 h-1 and at 750-1000°C. The catalyst volume was 6 ml, and the catalyst operating time was 240-264 h.Item type: Item , CATALYTIC CONVERSION OF A MIXTURE OF GASES CONSISTING OF METHANE AND CARBON DIOXIDE INTO A MIXTURE OF CARBON DIOXIDE AND HYDROGEN IN THE GAS PHASE USING ABSORBED NICKEL CATALYSTS(JOURNAL OF MULTIDISCIPLINARY RESEARCH, 2025-02) Koybaqarob Oybek ErgashovichStudies have shown that less coke is produced in the presence of catalysts supported on nickel based carriers [12; pp. 359-372, 13; pp. 22]. If the metal is supported on a carrier with a high Lewis basicity, the production of char decreases.Item type: Item , CHEMICAL PROCESS FOR THE SYNTHESIS OF HIGH MOLECULAR WEIGHT SYNTHETIC PENTANE TO NONADECANE HYDROCARBONS FROM IS GAS AND HYDROGEN(JOURNAL OF MULTIDISCIPLINARY RESEARCH, 2025-04) Koybakarob Oybek ErgashovichGeneral reactions for the synthesis of hydrocarbons from carbon monoxide and hydrogen, from synthesis gas, i.e. a mixture of carbon monoxide and hydrogen, to high molecular weight synthetic pentane to nonadecane the process of obtaining hydrocarbons can be expressed by different equations, depending on the catalyst chosen and the process conditions, but they all fall into two main ones.Item type: Item , GENERAL INFORMATION ABOUT THE PROCESS OF SYNTHESIZING HYDROCARBONS FROM CO2 AND H2(JOURNAL OF INTEGRATED EDUCATION AND RESEARCH, 2025-04) Koybakarob Oybek ErgashovichThe synthesis method for obtaining high-molecular synthetic hydrocarbons from pentane to nonadecane from synthesis gas is a complex system of chemical reactions that proceed sequentially and in parallel in the presence of a selected catalyst to obtain high-molecular synthetic hydrocarbons from pentane to nonadecane from synthesis gas, i.e. a mixture of flue gas and hydrogen.Item type: Item , METANNI KATALIZATORLAR ISHTIROKIDA KATALITIK OʻZGARISHI(ЛУЧШИЕ ИНТЕЛЛЕКТУАЛЬНЫЕ ИССЛЕДОВАНИЯ, 2025-06) Qo’yboqarov Oybek ErgashovichIshda metanning gaz fazasida karbonat angidrid ishtirokida is gazi bilan vodorod aralashmasiga katalizatorlar ishtirokida katalitik oʻzgarishida 700-800°C da nikel va platina katalizatorlarda CO + H2 muvozanatdagi katalitik oʻzgarishga erishildi. Metanni karbonat angidridi bilan katalizatorlar ishtirokida gaz fazada katalitik oʻzgarishida nikel katalizatorlarni koʻllashga asosiy toʻsiq ularning sirtida koks hosil boʻlishi bilan tez zaharlanishidan iborat. Sanoatda esa faqat metanning bugʻli konversiyasi ishlatiladi. Reaksiya yuqori temperaturada yaʼni 700-900°C da nikel saqlovchi katalizatorlar ishtirokida oʻtkaziladi.Item type: Item , METAN VA KARBONAT ANGIDRIDDAN IBORAT GAZLAR ARALASHMASINING GAZ FAZASIDA IS GAZI BILAN VODOROD ARALASHMASIGA KATALITIK OʻZGARISHINING YUTTIRILGAN NIKELLI KATALIZATORLAR(ЛУЧШИЕ ИНТЕЛЛЕКТУАЛЬНЫЕ ИССЛЕДОВАНИЯ, 2025-06) Qo’yboqarov Oybek ErgashovichIshda metan va karbonat angidriddan iborat gazlar aralashmasining gaz fazasida is gazi bilan vodorod aralashmasiga katalitik oʻzgarishi α-Al2O3, γ-Al2O3, α-Al2O3 SiO2, ZrO2, MgO ga nikel yuritilgan katalizatorlarda oʻrganildi; oraliq metallar bilan va ishqoriy promotrlar bilan modifikatsialangan katalizatorlarda ham Ni/α-Al2O3 katalitik faolligi Ni/γ-Al2O3 nikiga yaqin. Ni-katalizatorlari uchun kokslanishga chidamlilik qatori olingan:Item type: Item , CH4+CO2 ARALASHMA KATALIZATORLAR ISHTIROKIDA KATALITIK OʻZGARISHI MEXANIZMI(ЛУЧШИЕ ИНТЕЛЛЕКТУАЛЬНЫЕ ИССЛЕДОВАНИЯ, 2025-06) Qo’yboqarov Oybek ErgashovichIshda Izotop almashinish va diffuziya tarqalishi infraqizil spektroskopiya usulida olingan spektroskopiya in situ usullarida ham shunday natija olingan Metanni karbonat angidridi bilan katalizatorlar ishtirokida gaz fazada katalitik oʻzgarishini Ni/SiO2 da izotop almashinuv (12CH4 va 13CO2) usulida tekshirish koʻrsatdiki, 12CH4 harakatni ragʻbatlantiruvchi itarishidan keyin tez vodorod hosil boʻlishi kuzatiladi; uning tarkibi Ni2C yoki Ni3C boʻlishi mumkin. Reaksiya sharoitida karbidga oʻxshash formalar harakatsiz (turgʻun) boʻlib kolib yana CO ning ikkita harakatni ragʻbatlantiruvchi itarishi konsentratsiya qilinadi: avval 13CO2 dan 13CO dan hosil boʻladi.Item type: Item , CU/ZNO KATALIZATORLARIDA METHANOL OLISH(MODERN EDUCATION AND DEVELOPMENT, 2025-06) Qo’yboqarov Oybek ErgashovichBizning natijalarimiz Cu va ZnO ning interfeysdagi sinergiyasini ta'kidlaydi, bu esa format oraliq mahsulotlar orqali metanol sintezini osonlashtiradi. Hozirgi vaqtda sanoatda CO2 ni metanolga gidrogenlash uchun (CO2 + 3H2 → CH3OH + H2O) (1-3) ishlatiladigan etakchi katalizatorlar Cu / ZnO / Al2O3 dir. Cu / ZnO (4-7) dagi faol joylarning tabiatini tushunishga urinishlar ZnO ning roli haqida munozaralarga olib keldi (8). Imkoniyatlardan biri shundaki, interfeysda Cu va ZnO o'rtasida yaqin sinergiya mavjud bo'lib, u erda ZnO strukturaviy modifikator, vodorod rezervuari yoki bog'lanishni faollashtirish uchun bevosita promouter sifatida harakat qilishi mumkin (4, 9-11). Boshqa imkoniyat shundaki, yuqori faol ZnCu qotishmasi ZnO ni qisman kamaytirish yoki Cu ni metall Zn bilan bezash orqali hosil bo'ladi. Yaqinda o'tkazilgan tajribada ZnCu silikatining Cu/ZnO (7) ga qaraganda yuqori faolligi kuzatilgan bo'lsa-da, eksperimental texnikadagi cheklovlar tufayli umumiy reaktsiyani katalizlovchi tizimning yuqori qatlamidagi joylar haqida kam ma'lum edi. Sirtdagi faol joylarni tasvirlash uchun Cu/ZnO(000ī) (15) yoki Zndecorated Cu(211) pog'onali qirralarning (5, 16) CO2 dan metanol sintezini mexanik tushunishni ta'minlash uchun nazariy hisob-kitoblar amalga oshirildi.Item type: Item , ZNO/ZRO2-ZSM-5 KATALIZATORI ORQALI AROMATIK MODDALAR ISHLAB CHIQARISH(MODERN EDUCATION AND DEVELOPMENT, 2025-06) Qo’yboqarov Oybek Ergashovichshda qazib olinadigan yoqilg'idan foydalanish insoniyat tsivilizatsiyasining rivojlanishiga yordam bergan bo'lsa-da, CO2 ning katta emissiyasi jiddiy ekologik muammolarni keltirib chiqardi. Shu sababli, CO2 emissiyasini nazorat qilish XXI asrning asosiy muammolaridan biriga aylandi va uning atrof-muhitga salbiy ta'sirini yumshatish uchun shoshilinch ehtiyoj bor. Katalitik CO2 konversiyasi istiqbolli yondashuvlardan biridir, chunki u yoqilg'i va kimyoviy moddalarni ishlab chiqarish uchun barqaror yondashuvni taklif qiladi, shuningdek, qayta tiklanmaydigan energiya manbalariga qaramlikni kamaytirishga yordam beradi.Item type: Item , METANOL SINTEZI VA UGLEROD-UGLEROD BIRIKMASINI BIRLASHTIRGAN IKKI FUNKTSIYALI KATALIZATORNI ISHLAB CHIQISH(MODERN EDUCATION AND DEVELOPMENT, 2025-06) Qo’yboqarov Oybek ErgashovichIshda kimyoviy moddalarning asosiy qurilish bloklari bo'lgan quyi (C2-C4) olefinlarni turli xil neft bo'lmagan uglerod resurslaridan olinadigan sintez gazidan (H2 / CO) bevosita sintez qilish mumkin, ammo quyi olefinlar uchun selektivlik juda yuqori. Biz metanol sintezi va metanolni olefinga aylantirish reaktsiyalarini bifunksional katalizator bilan ulash juda yuqori selektivlik bilan singazni quyi olefinlarga to'g'ridan-to'g'ri aylantirishni amalga oshirishi mumkinligini xabar qilamiz. Biz ikkita faol komponentni tanlash va tarkibiy qismlarni birlashtirish usuli olefinlarning selektivligi uchun juda muhim ekanligini ko'rsatamiz. Ikkilik Zr-Zn oksidining o'zi 673 K da ham metanol va dimetil efir uchun yuqori selektivlikni ko'rsatadi va kislotaligi pasaygan SAPO-34 birikmasi CO 10% ga aylanishida C2-C4 olefinlari uchun taxminan 70% selektivlikni ta'minlaydi.Item type: Item , METALLDAGI CO2 GIDROGENLASH REAKSIYALARINING SELEKTIVLIGINI O’RGANISH(MODERN EDUCATION AND DEVELOPMENT, 2025-06) Qo’yboqarov Oybek ErgashovichCO2 ning kimyoviy o'zgarishi nafaqat Yer atmosferasiga antropogen CO2 emissiyasini yumshatibgina qolmay, balki kimyoviy moddalar va yoqilg'i ishlab chiqarish uchun prekursor sifatida ishlatilishi mumkin bo'lgan uglerod birikmalarini ham ishlab chiqaradi. CO2 ning faollashishi va konversiyasi metall/oksid interfeysida mavjud bo'lgan ko'p funktsiyali katalitik maydonlarda quyidagi imkoniyatlardan foydalangan holda amalga oshirilishi mumkin. Metall nanozarrachalar va oksidni qo'llab-quvvatlash o'rtasidagi sinergiya. Bu erda biz metall/oksid katalizatorlarida CO2 ni C1 (CO, CH3OH va CH4) birikmalariga gidrogenlashning mexanik tadqiqotlaridagi so'nggi yutuqlarni ko'rib chiqamiz. Shu asosda biz murakkab reaktsiyalar tarmog'ini yaxshiroq tushunishni ta'minlay olamiz, selektivlikni sozlashda interfeysdagi metall va oksidning tuzilishi va birikmasini boshqarish qobiliyatini tushunamiz va faoliyatni boshqarish uchun asosiy tavsiflovchilarni aniqlaymiz, xususan. , katalizatorlarning selektivligi. Va nihoyat, biz CO2 ning metall/oksid katalizatorlarida selektiv konversiyasini sozlash bo'yicha muammolar va kelajakdagi tadqiqot imkoniyatlarini ham muhokama qilamiz.Item type: Item , CO2 VA H2 NING QUYI OLEFINLARGA SELEKTIV TRANSFORMATSIYASI(ЛУЧШИЕ ИНТЕЛЛЕКТУАЛЬНЫЕ ИССЛЕДОВАНИЯ, 2025-06) Qo’yboqarov Oybek ErgashovichIshda pastki olefinlar (C2 =–C4 =, odatda etilen, propilen va butilenni nazarda tutadi) kimyo sanoatining asosiy kimyoviy moddalari bo'lib, an'anaviy ravishda neftga asoslangan termal kreking orqali ishlab chiqariladi. Olefinlarni to'g'ridan-to'g'ri CO2 gidrogenatsiyasi hali ham juda qiyin va bu jarayon uchun samarali katalizatorlarni ishlab chiqish juda ma'qul. Bu jarayonni shamol, quyosh va biomassa kabi qayta tiklanadigan manbalar yordamida ishlab chiqarilgan vodoroddan foydalangan holda birinchi navbatda CO2 ni metanolga aylantirish, so'ngra metanolni olefinlarga aylantirish orqali erishish mumkin. quyi olefinlarni ishlab chiqarishning eng muvaffaqiyatli noneft-kimyoviy yo'llaridan biri ekanligi isbotlangan. Katta CHA tipidagi tuzilishga ega SAPO-34 (ya'ni, a 0,74 0,74 1,0 nm 3D qafas tuzilishi 0,38 0,38 nm kichik oyna o'lchamlari), shuningdek, yuqori gidrotermik barqarorlik va o'rtacha kislotalilik.Item type: Item , CO2 NI OLEFINGA BOY C2+ UGLEVODORODLARGA SELEKTIV GIDROGENLASH UCHUN BIMETALIK Fe-Cu KATALIZATORLARI(ЛУЧШИЕ ИНТЕЛЛЕКТУАЛЬНЫЕ ИССЛЕДОВАНИЯ, 2025-06) Qo’yboqarov Oybek ErgashovichCO2 gidrogenatsiyasidan engil olefinlarning to'g'ridan-to'g'ri oziqlanishi uning CO2 emissiyasini kamaytirishdagi muhim roliga katta qiziqish uyg'otdi. Biz bu yerda sezilarli darajada samarali, mustahkam va ko‘p funksiyali NiCu/CeO2-YUKS katalizatorini o‘rganamiz, CO2ni selektivligi 78,2% gacha (C2H4 ¼ 22,7%, C3H6 ¼ 35,5% va C4H8 %) ¼ 18 .4 ga to‘g‘ridan-to‘g‘ri engil olefinlarga aylantira oladi. Optimal reaktsiya sharoitida CO selektivligi 65% dan past bo'ladi. Katalizatorning fizik-kimyoviy tavsifi BET, NH3-TPD, H2-TPR, XRD, TEM va SEM usullari yordamida amalga oshirildi. YUKS va NiCu/CeO2 ning rentgen nurlari diffraktsiya naqshlari bilan solishtirganda, kompozitsion ikkala namunaning barcha xarakterli rentgen nurlari diffraktsiya cho'qqilarini ko'rsatdi. Bundan tashqari, bizning ishlab chiqilgan gibrid katalizatorimiz ham foydali katalitik barqarorlikka ega, u 90 soat davomida aniq faollikni yo'qotmasdan ishlashi mumkin.Item type: Item , ИССЛЕДОВАНИЕ АНТИПЕННОЙ ЭФФЕКТИВНОСТИ ПЕНОГАСИТЕЛЕЙ ТИПА GQKS В ПРОЦЕССАХ ГАЗОАБСОРБЦИОННОЙ СУШКИ(Development of science, 2025-07) I.A.Анварова Д. Ш. ШукуроваВ данной статье получены пеногасители против пены, образующейся в абсорберах и десорберах при абсорбционной осушке газов. В статье представлены результаты определения пеногасительной эффективности пеногасителя типа GQKS в осушающих газах и зависимости пенообразования от времени и концентрации пеногасителя