HOME   Cart(0)   Quotation   About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189760 (18 Oct 2025)

GB/T 38691-2020 English PDF

US$129.00 ยท In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 38691-2020: Testing method for specific surface area of petroleum refining catalysts
Status: Valid
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 38691-2020English129 Add to Cart 3 days [Need to translate] Testing method for specific surface area of petroleum refining catalysts Valid GB/T 38691-2020

PDF similar to GB/T 38691-2020


Standard similar to GB/T 38691-2020

GB/T 37355   GB/T 37354   GB/T 37359   GB/T 38602   GB/T 38596   

Basic data

Standard ID GB/T 38691-2020 (GB/T38691-2020)
Description (Translated English) Testing method for specific surface area of petroleum refining catalysts
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G74
Classification of International Standard 71.100.99
Word Count Estimation 7,786
Date of Issue 2020-03-31
Date of Implementation 2021-02-01
Quoted Standard GB/T 6678-2003; GB/T 6679-2003; GB/T 21650.2-2008; NB/SH/T 0959-2017
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration
Summary This standard specifies the test method for the specific surface area of ??petroleum refining catalysts. This standard applies to the determination of the specific surface area of ??micro-mesoporous structure catalytic cracking catalysts, mesoporous structure distillate hydrotreating catalysts and catalytic reforming catalysts by static nitrogen adsorption capacity method. Other catalysts with similar structures are also suitable.

GB/T 38691-2020: Testing method for specific surface area of petroleum refining catalysts

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Testing method for specific surface area of petroleum refining catalysts ICS 71.100.99 G74 National Standards of People's Republic of China Test method for specific surface area of petroleum refining catalyst 2020-03-31 released 2021-02-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the China Petroleum and Chemical Industry Federation. This standard is under the jurisdiction of the National Chemical Standardization Technical Committee (SAC/TC63). Drafting organizations of this standard. Sinopec Nanjing Research Institute of Chemical Industry Co., Ltd., Sinopec Catalyst Co., Ltd., Beijing Sanju Environmental Protection New Materials Materials Co., Ltd., Haohua Chemical Technology Group Co., Ltd., Shandong Product Quality Inspection and Research Institute, China National Petroleum Corporation Limited Jilin Petrochemical Branch Company. The main drafters of this standard. Gao Hong, Li Ye, Li Zhongyu, Ni Xuemei, Zou Huiling, Du Yong, Zhang Qian, Ran Dengping, Ren Xufan, Qiu Ailing. Test method for specific surface area of petroleum refining catalyst

1 Scope

This standard specifies the test method for the specific surface area of petroleum refining catalysts. This standard applies to the static nitrogen adsorption volumetric method for the determination of micro-mesoporous structure catalytic cracking catalysts and mesoporous structure distillate hydrorefining catalysts The specific surface area of the catalyst and the catalytic reforming catalyst. Other catalysts with similar structures are also suitable.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 6678-2003 General Rules for Sampling of Chemical Products GB/T 6679-2003 General rules for sampling of solid chemical products GB/T 21650.2-2008 Determination of pore size distribution and porosity of solid materials by mercury intrusion method and gas adsorption method Part 2.Gas absorption Attached method to analyze mesopores and macropores NB/SH/T 0959-2017 Determination of specific surface area of catalytic cracking catalysts Static nitrogen adsorption capacity method

3 Terms and definitions

The terms and definitions defined in GB/T 21650.2-2008 and NB/SH/T 0959-2017 are applicable to this document. In order to make Use, the following repeats the relevant terms and definitions in GB/T 21650.2-2008 and NB/SH/T 0959-2017. 3.1 Adsorbate Adsorbed gas. [GB/T 21650.2-2008, definition 3.1] 3.2 Adsorption Enrichment of adsorbed gas on the outer surface and reachable inner surface of solid materials. [GB/T 21650.2-2008, definition 3.4] 3.3 Adsorptive Gas or vapor that can be adsorbed. [GB/T 21650.2-2008, definition 3.5] 3.4 Equilibrium adsorption pressure The equilibrium pressure of adsorbate and adsorbate. [GB/T 21650.2-2008, definition 3.7]

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 38691-2020_English be delivered?

Answer: Upon your order, we will start to translate GB/T 38691-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 38691-2020_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 38691-2020_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.