scholarly journals Recent Advances in Synthesis of Benzothiazole Compounds Related to Green Chemistry

Molecules ◽  
2020 ◽  
Vol 25 (7) ◽  
pp. 1675 ◽  
Author(s):  
Xiang Gao ◽  
Jiao Liu ◽  
Xin Zuo ◽  
Xinyue Feng ◽  
Ying Gao

Benzothiazoles have played an important role in the field of biochemistry and medicinal chemistry due to their highly pharmaceutical and biological activity. The development of synthetic processes is undoubtedly one of the most significant problems facing researchers. In this review paper, we provided recent advances in the synthesis of benzothiazole compounds related to green chemistry from condensation of 2-aminobenzenethiol with aldehydes/ketones/acids/acyl chlorides and the cyclization of thioamide or carbon dioxide (CO2) as raw materials, and the future development trend and prospect of the synthesis of benzothiazoles were anticipated.

2021 ◽  
Author(s):  
Sandeep Pimparkar ◽  
Aishwarya K. Dalvi ◽  
Adithyaraj Koodan ◽  
Siddhartha Maiti ◽  
Shaeel Al-Thabaiti ◽  
...  

Carbon dioxide (CO2) has emerged as one of the exciting cost-effective, abundant, and ready-to-use C1 sources in synthetic organic chemistry. However, the thermodynamic stability, as well as the kinetic inertness,...


2012 ◽  
Vol 164 ◽  
pp. 218-222
Author(s):  
Shan Dan Zhou ◽  
Li Ming Hu ◽  
Xiao Dong Ouyang

The 21st century is the period of the rapid growth and development of renewable energy, which refers to fuel and raw materials that replaces the oil and can be recycled and required by people’s living and production activities, and biomass energy resides in the first of renewable energy. This paper carries on a analysis and study mainly on the three basic technologies of biomass energy, analyzes the meaning and future development trend of biomass energy and proposes measures of the development.


Perspektif ◽  
2016 ◽  
Vol 14 (2) ◽  
pp. 125 ◽  
Author(s):  
BUDI SANTOSO ◽  
ARINI HIDAYATI JAMIL ◽  
MOCH. MACHFUD

<p>ABSTRAK<br /><br />Kenaf merupakan tanaman penghasil serat alam yang memiliki banyak produk diversifikasi dengan nilai ekonomi tinggi dan ramah lingkungan. Kontribusi kenaf terhadap lingkungan juga dikenal melalui kemampuannya yang tinggi dalam menyerap karbondioksida. Karbondioksida (CO2) adalah gas penyumbang efek rumah kaca utama yang sebagiannya dihasilkan secara antropogenik. Penyimpanan karbon oleh tanaman menjadi salah satu langkah paling penting dalam mitigasi gas rumah kaca. Tingginya absorbsi karbondioksida oleh kenaf dipengaruhi oleh laju fotosintesis yang tinggi, meskipun kenaf termasuk dalam tumbuhan C3. Laju fotosintesis kenaf didukung oleh aktivitas RuBP karboksilase, konduktansi stomata, dan hasil biomasa tanaman yang tinggi. Laju fotosintesis kenaf mencapai 3-8 kali lebih tinggi dibandingkan pohon dan tanaman C3 lainnya. Berdasarkan biomasa yang dihasilkan, kenaf siap panen umur 4-5 bulan menyimpan 2,9-12,1 ton C/ha atau menyerap 21-89 ton CO2/ha/tahun tergantung pada manajemen agronomi dan kondisi lingkungannya. Dengan luas lahan kenaf di Indonesia saat ini kurang lebih 3000 ha, maka serapan CO2 per tahun mencapai 63-267 ribu ton. Selain sebagai penyimpan karbon dalam waktu lama, beberapa produk diversifikasi kenaf seperti interior dan komponen mobil, peredam suara, serta pulp dan kertas juga turut berkontribusi mengurangi emisi CO2 melalui penghematan energi, serta mengurangi laju deforestasi dan emisi gas berbahaya lainnya. Pengembangan kenaf diharapkan mampu membantu pemerintah Indonesia dalam upaya menurunkan emisi gas rumah kaca serta menyediakan bahan baku serat alam untuk kebutuhan industri yang ramah lingkungan.<br />Kata kunci: Kenaf, absorbsi karbondioksida<br /><br />ABSTRACT</p><p>Kenaf (Hibiscus cannabinus L.) Benefits in Carbon Dioxide (CO2) Sequestration<br /><br />Kenaf is a natural fiber crop that have a lot of diversified products with high economic value and environmental functions. Kenaf contribution to the environment is also known through a high ability to absorb carbon dioxide. Carbon dioxide (CO2) gas is the main anthropogenic contributor to the greenhouse effect. Carbon sequestration by plants became one of the most important steps to greenhouse gases mitigation. The high absorption of carbon dioxide by kenaf affected by the high photosynthetic rate, although kenaf belongs to the group of C3 plants. Kenaf photosynthetic rate supported by high RuBP carboxilase activity, high stomatal conductance, and high plant biomass production. Kenaf photosynthetic rate reaches 3-8 times higher than trees and other C3 plants. Based on biomass produced, kenaf ready for harvest on 4-5 months plant age saved 2,9-12,1 tonnes C/ha or absorb 21-89 tonnes CO2/ha/year depending on the agronomic management and environmental conditions. Nowadays, land area of kenaf in Indonesia is approximately 3000 ha, therefore the absorption of CO2 reaches about 63-267 million tonnes/year. As well as carbon sink in long time, some kenaf diversified products such as car interior and automobile components, sound absorber, and pulp and paper also contribute to reducing CO2 emissions through savings of energy and decreasing deforestation rate and other harmful gas emissions. Development of kenaf plantation is expected to help the Indonesian government in an effort to reducing greenhouse gas emissions as well as providing the raw materials of natural fiber for environmentally friendly industrial raw materials.<br />Keywords : Hibiscus cannabinus L., carbon dioxide sequestration</p>


Author(s):  
Olga Beatrice Carcassi ◽  
Ingrid Paoletti ◽  
Laura Elisabetta Malighetti

Bio-based materials gained momentum in recent years due to their origin from raw materials capable of self-regeneration, locally available and theoretically biodegradable, as well as for their natural ability to store carbon dioxide (CO2) within the biomass. In a circular economy and within the perspective of the diffusion of information, this reasoned catalogue compares their technical and environmental properties together with their availability within the European territory. The aim is to support stakeholders towards a conscious choice of products and, during the process innovation phase, to help them choose the raw materials for the composition of new building materials/components to be included in a “circular” market.


2018 ◽  
Vol 58 (4) ◽  
pp. 366-383 ◽  
Author(s):  
Jamil Ahmad ◽  
Wajahat Ur Rehman ◽  
Kalim Deshmukh ◽  
Shaik Khadheer Basha ◽  
Basheer Ahamed ◽  
...  

2021 ◽  
Author(s):  
Chaorong Qi ◽  
Lu Wang ◽  
Fuxing Shi ◽  
Wenjie Xu ◽  
Wenfang Xiong ◽  
...  

Photocatalytic conversion of carbon dioxide (CO2) into value-added chemicals is of great significance from the viewpoint of green chemistry and sustainable development. Here, we report a stereodivergent synthesis of β-iodoenol...


2018 ◽  
Vol 1 (2) ◽  
pp. 1-8
Author(s):  
Dody Hidayat

Kebakaran dapat terjadi dimana saja salah satunya dapat terjadi di alat transportasi air yakni kapal. Kebakaran selalu menyebabkan hal-hal yang tidak diinginkan baik kerugian material maupun ancaman keselamatan jiwa manusia. Seiring dari kejadian tersebut musibah kecelakaan kapal yang disebabkan oleh bahaya kebakaran sangatlah mungkin terjadi. Salah satu yang dapat mencegah kejadian kebakaran pada kapal haruslah dapat mendeteksi dini kebakaran tersebut. Untuk mendeteksi dini terjadinya kebakaran dikapal maka dirancanglah sebuah alat proteksi kebakaran otomatisberbasis adruino. Dimana Arduino merupakan board yang memiliki sebuah mikrokontroller sebagai  otak kendali sistem. Sistem otomatisasi atau controller tidak akan terlepas dengan apa yang disebut  dengan ‘sensor’. Sensor adalah sebuah alat untuk mendeteksi atau mengukut sesuatu yang digunakan untuk mengubah variasi mekanis, magnetis, panas, sinar dan kimia menjadi tegangan dan arus listrik. sistem yang dirancang ini dilengkapi dengan beberapa sensor diantaranya adalah sensor apiUV-Tron R2868, sensor asap MQ-2 dan kemudian sensor suhuDS18B20. Mikrokontroller sebagai pengendali akan merespon input yang berupa sensor tersebut ketika data yang dibaca oleh sensor mendeteksikebakaran diantaranya mendeteksi adanya asap, kemudian api dan suhu. Sebagai output dari sistem berupa racun api (fire extinguisher)dimana kandungan yang ada pada racun api tersebut berupa Dry Chemical Powder dan Carbon Dioxide (CO2) yang fungsinya digunakan untuk memadamkan api serta dilengkapi buzzer sebagai alarm peringatan jika terjadi kebakaran. 


2012 ◽  
Author(s):  
William R. Howard ◽  
Brian Wong ◽  
Michelle Okolica ◽  
Kimberly S. Bynum ◽  
R. A. James

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