The activity of Pt Re catalysts on α- or γ-alumina has been determined for various reactions. In no case is the activity of bimetallic catalysts the sum of the activity of platinum and rhenium of which the catalyst is composed.
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Abstract. A study of Pt, Re, and Pt Re on γ-alumina catalysts was made by temperature-programmed reduction (TPR). As observed by others, an interaction occurs with Pt and Re when Pt Re catalysts are preoxidized at 300 °C or below; Re reduces at lower temperatures compared to Re Al 2 O 3. At 500 °C preoxidation, TPR profiles of Pt …
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Dalam menyelenggarakan pendidikan, Institut Sains & Teknologi AKPRIND Yogyakarta menerapakan sistem penjaminan mutu serta standar yang telah ditetapkan oleh pemerintah. Saat ini seluruh program studi yang ada di IST AKPRIND telah terakreditasi oleh Badan Akreditasi Nasional Perguruan Tinggi (BAN-PT).
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IST AKPRIND pilihannya. Saya memperoleh pekerjaan di Industri Palm Oil Mill sebelum lulus. Saya memperoleh pekerjaan di Industri Palm Oil Mill sebelum lulus. Melalui program Management Training dengan kerja keras, disiplin, loyalitas, dan kejujuran yang saya dapat diorganisasi dan perkuliahan membawa saya meraih kesuksesan.
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Effect of Re loading on the catalytic properties of Pt–Re/Al 2 O 3. Rhenium in Pt–Re/Al 2 O 3 catalyst is known to exist in two types of active sites, namely, (1) Pt–Re ensembles and (2) support (Al 2 O 3) interacted rhenium [13]. The strong interaction between rhenium and support is expected to cause decrease in reducibility of rhenium ...
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The Pt–Re atomic alloy is fabricated by alloying of atomically dispersed Pt with Re inside the $$upbeta $$ β -zeolite pores with a size of 0.5–0.6 nanometres. The atomically dispersed Pt–Re alloy species exhibit a surprisingly high mass activity of about 60 A $$hbox {g}_{mat{Pt}}^{-1}$$ g Pt - 1 for the oxygen reduction reaction, which is …
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In 1869, Dmitri Ivanovich Mendeleev (1834–1907) predicted the existence of two yet-undiscovered elements of the Periodic Table. He named the analogs of manganese (group VII) eka-mangenese and dvi-manganese.Nowadays, these elements are known as technetium (atomic number Z = 43) and rhenium (Z = 75).. From 1904 to 1906, the …
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Abstract: Experimental material was the waste platinum-rhenium catalyst; the kinetics of rhenium in PT rhenium catalyst failed by pressure oxygen leaching was studied. The effects of leaching pressure, temperature, sulfuric acid acidity, stirring speed and particle size on the kinetics of rhenium leaching were investigated in this paper.
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Rhenium was discovered by the German chemists Ida Tacke-Noddack, Walter Noddack and Otto Carl Berg in 1925. They detected rhenium spectroscopically in platinum ores and in the minerals columbite ((Fe, Mn, Mg)(Nb, Ta) 2 O 6), gadolinite ((Ce, La, Nd, Y) 2 FeBe 2 Si 2 O 10) and molybdenite (MoS 2).Rhenium is present in these materials only in trace …
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Fakultas Teknologi Industri (FTI) Institut Sains & Teknologi AKPRIND Yogyakarta melingkupi pendidikan Program Sarjana (S1) dan diploma 3 (D3) bertujuan mengembangkan, menyebarluaskan ilmu pengetahuan dan teknologi yang dibutuhkan oleh industri/jasa yang mengolah/memanfaatkan sumber daya.
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Increase in aromatic yields and decrease in cracking yields was observed up to 0.6 wt.% rhenium loading (Re/Pt weight ratio = 2.0). Further increase of Re caused decrease in xylene and C 9 + with simultaneous increase of …
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FA was also the main product at 150 °C for most catalysts (Pt/C, Re/C, Ru/C, Rh/C, Ni/C), while the highest yield was obtained by using Ru/C, followed by Re/C and Pt/C. Aldehyde group hydrogenation was faster with all catalysts at 200 °C compared to lower temperatures, although other side or sequential products were observed in all …
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Nov 18, 2020· The Rhenium-188 paste is a brachytherapy utilizing the Beta emitter radioisotope Rhenium-188 for epidermal treatments. Rhenium-188 is an isotope with excellent therapeutic advantages that delivers ß-radiation to lesions and minimum dose to the surrounding tissue due to its low penetration in the human tissue (only up to 2-3 mm).
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PT Jhonlin Group, sebuah perusahaan lokal yang bergerak di bidang pertambangan, perkebunan, kesehatan dan pendidikan di Kabupaten Tanah Bumbu, Kalimantan Selatan mengutamakan tenaga kerja lokal. Sejak berdiri 2011 di Batulicin, perusahaan milik pengusaha lokal Syamsudin Arsyad itu mampu menyerap hingga 18 …
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Institut Sains & Teknologi AKPRIND 1 tahun 5 bulan Field Geology 1 Assistant Institut Sains & Teknologi AKPRIND Jan 2023 - Jun 2023 6 bulan. Daerah Istimewa Yogyakarta, Indonesia ... PT Masmindo Dwi Area is looking for a passionate to fill the position of Internship Admin Project, which will be placed at Site Awak Mas Project. ...
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Abstract: Experimental material was the waste platinum-rhenium catalyst; the kinetics of rhenium in PT rhenium catalyst failed by pressure oxygen leaching was studied. The effects of leaching pressure, temperature, sulfuric acid acidity, stirring speed and particle size on the kinetics of rhenium leaching were investigated in this paper.
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Alumni Rudi Nurbiantoro,ST Jurusan Teknik Industri IST AKPRIND Yogyakarta. Rudi Nurbiantoro, ST. Unit Head Quality Control PT FORISA NUSA PERSADA " Sebagai Alumni Jurusan Teknik Industri, Institut Sains & Teknologi AKPRIND Yogyakarta, merupakan suatu kebangaan bagi saya dapat menimba ilmu dan memperoleh banyak pengalaman serta …
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Dalam menyelenggarakan pendidikan, Institut Sains & Teknologi AKPRIND Yogyakarta menerapakan sistem penjaminan mutu serta standar yang telah ditetapkan oleh pemerintah. Saat ini seluruh program studi yang ada di IST AKPRIND telah terakreditasi oleh Badan Akreditasi Nasional Perguruan Tinggi (BAN-PT).
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Saat ini lowongan kerja PT Pupuk Kaltim sedang dibuka untuk kandidat pelamar lulusan SMA, SMK, D3, dan S1 yang tertarik bekerja di perusahaan tersebut sebagai Apprentice Challenge, berikut informasi selengkapnya. Persyaratan Umum : •Warga Negara Indonesia •Pria dan Wanita •Pendidikan minimal SMA SMK D3 S1
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Kami PT Bizona Prima Perdana bergerak dalam pengolahan air atau Water Treatment.Kami mengaplikasikan teknologi Water Treatment System untuk menghasilkan air minum (Potable Drinking Water), Process Water Treatment, Sea Water desalination, dan air limbah (Waste Water Treatment).
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A catalyst composition/system can include: a platinum catalyst metal (Pt) and/or rhenium catalyst metal (Re) on a first support; and a ruthenium catalyst metal (Ru) and/or rhenium catalyst metal (Re) on a second support or a platinum catalyst metal (Pt) and a ruthenium catalyst metal (Ru) and/or a rhenium catalyst metal (Re) on the same …
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Introduction. A number of well documented events where radiological sources have been discovered outside of the regulatory system have helped to substantiate the belief that radioactive materials are open to being exploited for malicious intent [1–5].Being able to distinguish between different material production routes and …
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PT. Mitra Rekatama Mandiri merupakan perusahaan yang terletak di Klaten dan bergerak dalam bidang usahateknologi alat-alat pertanian. Dalam menjalankan aktivitas salah satu departemennya adalah divisi pengecoranlogam.Pada unit ini aktivitas produksi masih didominasi oleh tenaga manusia (Manual Material Handling). Masalahyang …
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PT.Mitrametal Perkasa berdiri pada bulan Juli tahun 1997 sebagai perusahaan komponen otomotif, dengan pelanggan perusahaan OEM untuk produk kendaraan roda dua seperti Honda, Yamaha, Suzuki da Kawasaki, Juga untuk produk kendaraan roda empat seperti Suzuki dan Hino. ... Institut Sains & Teknologi AKPRIND …
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Platinum (Pt) Rhenium (Re) ... Platinum (Pt) Silicon (Si) Silcon Dioxide (SiO 2) Silver (Ag) Tatalum (Ta) Titanium (Ti) Titanium Dioxide (TiO 2) Tungsten (W) Parylene Thermal Evaporator. The Specialty Coating Systems is a dedicated parylene evaporator that deposits a totally conformal film. Parylene is a chemically inert polymer that has many ...
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The phase equilibria of the Re-Ru-W ternary system at 1500 °C contain two three-phase regions, i.e., hcp + σ (ReW) + χ and bcc (W) + hcp + σ (ReW). The solubilities of Ru in the χ and σ (ReW) phases were measured to be about 6 and 28 at.%, respectively. For the isothermal section at 2000 °C, there is only one three-phase region, i.e ...
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A study of Pt, Re, and Pt Re on γ-alumina catalysts was made by temperature-programmed reduction (TPR). As observed by others, an interaction occurs with Pt and Re when Pt Re catalysts are preoxidized at 300 °C or below; Re reduces at lower temperatures compared to Re Al 2 O 3.
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Phase relationships in the Al–Re binary system have been thermodynamically reassessed by using the CALPHAD technique to take into account the most recent experimental data in the Al-rich part. A new version of the Al–Re phase diagram considering the congruent melting of the Al11Re4 as well as the modified temperatures and nature of …
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The stabilizing effect of Re on atomically dispersed Pt is contributed to the alloying effect of Pt atom with rhenium inside the pore of the (upbeta ) -zeolite. The thermo-stability of highly dispersed bimetallic Pt–Re species is higher than that of the monometallic Pt species inside the zeolite pores.
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Rhenium was the lower one and indeed it was the last stable, non-radioactive, naturally-occurring element to be discovered. In 1905, Masataka Ogawa found it in the mineral thorianite from Sri Lanka. He realised from lines in its atomic spectrum that it contained an unknown element. He wrongly thought it was the one directly below manganese and ...
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Joko Susetyo Jurusan Teknik Industri, FTI, IST AKPRIND Yogyakarta Keywords: Pengukuran Kinerja, IPMS, AHP, Requerement, Stakeholder Abstract. PT X adalah perusahaan yang bergerak dalam bidang pengecoran logam. Selama ini, aspek finansial memegang peranan yang sangat penting dalam mengukur kinerja perusahaan, …
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An overview of most of the well known rhenium porphyrins (rhenium in the core of porphyrins) is presented here reviewing their synthesis, coordination chemistry, and applications. The important features of oxorhenium(v) porphyrins are discussed elaborately taking into account their application in epoxidation 2020 Frontier and Perspective articles
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While rhenium has proven to be an ideal material in fast-cycling high-temperature applications such as rocket nozzles, its prohibitive cost limits its continued use and motivates a search for viable cost-effective substitutes. We show that a simple design principle that trades off average valence electron count and cost considerations proves …
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